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Which numbers have 6 divisors?
Numbers that have 6 divisors are typically square numbers of prime numbers. This is because the divisors of a number come in pairs, except when the number is a perfect square. In the case of a perfect square, one of the pairs of divisors is the same number, resulting in an odd number of divisors. Therefore, numbers like 4, 9, 25, and 49 have 6 divisors.
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Which number has 12 divisors?
The number that has 12 divisors is 60. The divisors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. Since there are 12 divisors for the number 60, it meets the criteria of having 12 divisors.
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What are exactly proper divisors?
Proper divisors of a positive integer are the positive integers that divide the number evenly, excluding the number itself. In other words, proper divisors are the factors of a number that are less than the number itself. For example, the proper divisors of 12 are 1, 2, 3, 4, and 6, as these are the positive integers that divide 12 without leaving a remainder, excluding 12 itself.
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Can one infer the divisors of a number from the divisors of its digit sum?
No, one cannot infer the divisors of a number from the divisors of its digit sum. The divisors of a number and the divisors of its digit sum are not directly related. The digit sum of a number is simply the sum of its individual digits, and the divisors of the digit sum do not necessarily have any correlation with the divisors of the original number. Therefore, one cannot make any reliable inferences about the divisors of a number based solely on the divisors of its digit sum.
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List all the divisors of 900.
The divisors of 900 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, and 900.
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Which numbers have only 4 divisors?
Numbers that have only 4 divisors are square numbers of prime numbers. This is because the only divisors of a square number are 1, the number itself, and its square root. Since prime numbers only have two factors (1 and the number itself), the square of a prime number will have exactly 4 divisors. Examples of numbers with only 4 divisors include 4 (2^2), 9 (3^2), 25 (5^2), and so on.
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How many divisors does 6 have?
The number 6 has four divisors: 1, 2, 3, and 6. These are the numbers that can divide evenly into 6 without leaving a remainder.
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What are comfortable percentages and divisors?
Comfortable percentages and divisors are numbers that are easy to work with mentally. For example, percentages like 25%, 50%, and 75% are comfortable because they are easy to calculate in your head. Divisors like 2, 5, and 10 are also comfortable because they are simple to divide by and often result in whole numbers. These comfortable percentages and divisors can make calculations and problem-solving quicker and more efficient.
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What are convenient percentages and divisors?
Convenient percentages and divisors are numbers that are easy to work with and calculate mentally. For example, percentages like 25%, 50%, and 75% are convenient because they are simple fractions of 100. Divisors like 2, 5, and 10 are also convenient because they are easy to divide by and often result in whole numbers. These convenient percentages and divisors are commonly used in everyday calculations and can help simplify math problems.
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Can a subset contain infinitely many divisors?
Yes, a subset can contain infinitely many divisors. For example, the set of all positive integers is a subset that contains infinitely many divisors for each integer. Additionally, the set of all prime numbers is another subset that contains infinitely many divisors for each prime number. Therefore, it is possible for a subset to contain infinitely many divisors.
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How do you calculate divisors and multiples?
To calculate divisors of a number, you can simply find all the numbers that divide the given number without leaving a remainder. For example, to find the divisors of 12, you would list out 1, 2, 3, 4, 6, and 12. To calculate multiples of a number, you can multiply the number by different integers. For example, to find the multiples of 5, you would multiply 5 by 1, 2, 3, and so on to get 5, 10, 15, and so forth.
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How many divisors does the number have?
The number of divisors a number has depends on the number itself. For example, a prime number only has two divisors: 1 and itself. A number with more than two divisors is called a composite number. The number of divisors a composite number has can be calculated by finding its prime factorization and using the formula to calculate the total number of divisors.
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