User michel marcus - MathOverflowmost recent 30 from http://mathoverflow.net2013-05-18T09:31:24Zhttp://mathoverflow.net/feeds/user/17813http://www.creativecommons.org/licenses/by-nc/2.5/rdfhttp://mathoverflow.net/questions/56376/recovering-n-from-sigman-n/75476#75476Answer by Michel Marcus for Recovering n from sigma(n)/nMichel Marcus2011-09-15T03:47:34Z2011-09-15T03:47:34Z<p>I got a PARI/GP script that does this.
For instance, for 7/2
(05:45) gp > solveBA(7, 2, 10^10)
%1 = [4680, 26208, 4320, 197064960, 20427264, 57575890944, 21857648640]</p>
http://mathoverflow.net/questions/61843/which-rationals-are-sum-of-divisor-function-quotients/75474#75474Answer by Michel Marcus for Which rationals are sum-of-divisor function quotientsMichel Marcus2011-09-15T03:35:03Z2011-09-15T03:35:03Z<p>You can also look at
<a href="http://upforthecount.com/math/abundance.html" rel="nofollow">http://upforthecount.com/math/abundance.html</a>
and <a href="http://upforthecount.com/math/black.html" rel="nofollow">http://upforthecount.com/math/black.html</a></p>