Suppose n is a positive integer such that 6n has exactly 9 positive divisors. How many prime numbers are divisors of 6n?
n ==6
6 x 6==36
36 = (1, 2, 3, 4, 6, 9, 12, 18, 36) > 9 (divisors)
Prime divisors of 6n ==2 and 3
