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Solutions of the congruence |
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| Authors: | José María Grau Pieter Moree Antonio M Oller‐Marcén |
| Institution: | 1. +34 985 182 094+34 985 103 354;2. Departamento de Matematicas, Universidad de Oviedo, Oviedo, Spain;3. +49 228 402 232+49 228 402 277;4. Max‐Planck‐Institut für Mathematik, Germany;5. Centro Universitario de la Defensa de Zaragoza, Zaragoza, Spain |
| Abstract: | In this paper we characterize, in terms of the prime divisors of n, the pairs  for which n divides  . As an application, we derive some results on the sets |
| Keywords: | Power sums congruence divisibility asymptotic density Giuga numbers 11A07 11A99 11B99 |