Geodesic
On the congruences $σ(n) ≡ a (mod n)$ and $n ≡ a (mod φ(n))$
Acta Arithmetica, Tome 26 (1974) no. 3, pp. 265-272.

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

DOI : 10.4064/aa-26-3-265-272

Carl Pomerance 1

1 
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     title = {On the congruences $\ensuremath{\sigma}(n) \ensuremath{\equiv} a (mod n)$ and $n \ensuremath{\equiv} a (mod \ensuremath{\varphi}(n))$},
     journal = {Acta Arithmetica},
     pages = {265--272},
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Carl Pomerance. On the congruences $σ(n) ≡ a (mod n)$ and $n ≡ a (mod φ(n))$. Acta Arithmetica, Tome 26 (1974) no. 3, pp. 265-272. doi : 10.4064/aa-26-3-265-272. http://geodesic.mathdoc.fr/articles/10.4064/aa-26-3-265-272/

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