%0 Journal Article %A Luca, Florian %T On the sum of divisors of the Mersenne numbers %J Mathematica slovaca %D 2003 %P 457-466 %V 53 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_2003__53_5_a1/ %G en %F MASLO_2003__53_5_a1