Geodesic
On positive integers $n$ with a certain divisibility property
Journal of integer sequences, Tome 12 (2009) no. 3.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: In this paper, we study the positive integers $n$ having at least two distinct prime factors such that the sum of the prime factors of $n$ divides $2^{n-1} - 1$.
Classification : 11A41, 11N25
Keywords: primes, sieve methods 
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     author = {Luca, Florian and Tipu, Vicentiu},
     title = {On positive integers $n$ with a certain divisibility property},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2009__12_3_a2/}
}
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Luca, Florian; Tipu, Vicentiu. On positive integers $n$ with a certain divisibility property. Journal of integer sequences, Tome 12 (2009) no. 3. http://geodesic.mathdoc.fr/item/JIS_2009__12_3_a2/