On common values of ϕ(n)ϕ(n) and σ(m)σ(m), II

preprint2010arXivOpen access

Abstract

Let phi(n) be Euler's totient function and let sigma(n) be the sum of the positive divisors of n. We show that most phi-values (integers in the range of phi) are not sigma-values and vice versa.

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