Geodesic
On a sum of Divisors Problem
Publications de l'Institut Mathématique, _N_S_64 (1998) no. 78, p. 9 .

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

Several results concerning the set $\S$ are proved. This set was constructed by A. Granville as follows: Let $1\in\Cal S$, and for $n\in\Bbb N$ and $n>1$ let $n\in\Cal S$ if $\sum_{d|n,d
Classification : 11N25 11N37
Keywords: sum of divisors, perfect numbers, Mersenne primes 
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     author = {Jean-Marie De Koninck and Aleksandar Ivi\'c},
     title = {On a sum of {Divisors} {Problem}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {9 },
     publisher = {mathdoc},
     volume = {_N_S_64},
     number = {78},
     year = {1998},
     zbl = {0993.11048},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1998_N_S_64_78_a2/}
}
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Jean-Marie De Koninck; Aleksandar Ivić. On a sum of Divisors Problem. Publications de l'Institut Mathématique, _N_S_64 (1998) no. 78, p. 9 . http://geodesic.mathdoc.fr/item/PIM_1998_N_S_64_78_a2/