Maya's Divisors
Source: AIME 2010I Problem 1
March 17, 2010
probabilityAMCAIMEnumber theoryrelatively prime
Problem Statement
Maya lists all the positive divisors of . She then randomly selects two distinct divisors from this list. Let be the probability that exactly one of the selected divisors is a perfect square. The probability can be expressed in the form , where and are relatively prime positive integers. Find m \plus{} n.