An analog of perfect numbers involving the unitary totient function

Abstract

We shall give some results for an integer divisible by its unitary totient.

22 pages, the author's final version, published in J. Number Theory (online), some results have been omitted since more stronger results have been shown

References in corpus (2)

• An explicit zero-free region for the Dirichlet L-functions
• Explicit formulae for primes in arithmetic progressions, I