Number Factors

factorizations of a positive integer n is a collection of at least two positive integers, each larger than one, whose product is n. Note that, 2*12 and 12*2 represent the same factorization of 24. In fact, 24 has precisely 6 valid factorizations: 2*2*2*3, 2*2*6, 2*3*4, 2*12, 3*8, and 4*6. so you have to write a program that, given an int n, returns the number of unique factorizations of n. Input