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September 2, 2014

Homework Help: Sigma over Phi

Posted by HELP ME...uRGENT! on Friday, April 19, 2013 at 3:46am.

Let σ(n) be the sum of the positive divisors of an integer n and ϕ(n) be the number of positive integers smaller than n that are coprime to n. If p is a prime number, what is the maximum value σ(p)/ϕ(p)?

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