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Given that N = 2^(n)(2^(n+1) -1) and 2^(...

Given that `N = 2^(n)(2^(n+1) -1)` and `2^(n+1) - 1` is a prime number, which of the following is true, where n is a natural number.

A

sum of divisors of N is 2N

B

sum of reciprocals of divisors of N is 1

C

sum of the reciprocals of the divisors of N is 2

D

sum of divisors of N is 4N

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The correct Answer is:
A
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