studying for finals and enountered this problem on a practice test.
If n is a natural number such that n = 2^k(2^(k+1) - 1) with 2^(k+1) -1 prime then 2n = sum of the divisors.
studying for finals and enountered this problem on a practice test.
If n is a natural number such that n = 2^k(2^(k+1) - 1) with 2^(k+1) -1 prime then 2n = sum of the divisors.