## How to find the Factors of 40

**40**is a composite number.-
Prime factorization:
**40**= 2x2x2x5, which can be written**40**= 2^{3}x5^{1} - The exponents in the prime factorization are 3 and 1.
Adding one to each exponent and multiplying we get
(3 + 1)(1 + 1) = 4x2 = 8.
Therefore
**40**has exactly**8**factors. - The factors of
**40**are: 1, 2, 4, 5, 8, 10, 20 and 40 - Factor pairs of
**40**are: 1x40, 2x20, 4x10 and 5x8 -
**40**has at least one exponent greater than 1 in its prime factorization so**√40**can be simplified. Taking this into account, we get**√40**= 2x√10