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How do you calculate the number of factors of a number?

Updated: 8/17/2019
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8y ago

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List the prime factorization of the number by exponents. Remember that if a number does not have an exponent, the exponent "1" is implied. Add one to each exponent and multiply. That is the total number of factors.

2^3 x 3^2 = 72

4 x 3 = 12

72 has twelve factors.

If there is only one prime factor, add one and there you are.

2^4 = 16

16 has five factors.

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