Hello
I need help:
LetN = (2^(p)− 1)2^(p-1), where p is prime. Give the elements of the set
SNthat consists of the divisors of N, others than N :
SN= {x1, x2, ..., xn},
with {i = 1, 2...n : xi|N, xi 6= N}. What is the cardinality of SN.
GiveN and SN for p = 2, 5
thank you