How many positive divisors does each of the following have?
[tex] 2^n [/tex] where n is a positive integer.
The Attempt at a Solution
for 30 i get 2 , 5 , 3 , 10
but my book says 2 ,3 ,5 I dont understand why 10 isn't a divisor.
and for 2^n im trying to look for a pattern if n=1 i get no divisors
and n=2 i get 1 divisor and n=3 i get 2 divisors so would it be
2^n has n-1 divisors?