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The factors of the number 12 are 1, 2, 3, 4, 6, 12, -1, -2, -3, -4, -6 and -12. There are exactly 12 factors of the number 12.

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The number with the most factors is infinite. The number with the most known factors contains all of the prime numbers, of which Euclid's theorem also suggests there is an infinite number.

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Factors are the numbers that are multiplied together to get another number. To find the factors of a given number, the number is divided by other numbers smaller than the given number, as the factor of any number cannot be greater than the number itself.

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The factors of the number 23 are 23 and 1. Factors of a number are the numbers that are multiplied together to equal the given number.

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There are six factors of the number 18. The factors are one, two, three, six, nine and 18. Each of these numbers can divide the number 18 without a remainder, making them factors of 18.

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The positive number factors of the number 63 are: 1, 3, 7, 9, 21, and 63. The easiest way to find the factors of a number is through a series of equations that use basic division.

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The following numbers under 100 have the most factors: 60, 72, 84, 90 and 96. They each have a total of 12 factors, including the number one and the number itself.