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Jun 21, 2016 at 16:44 answer added yakov timeline score: 3
Jun 4, 2016 at 7:39 vote accept Simon Rose
Jun 3, 2016 at 17:17 history edited GH from MO
edited tags
Jun 3, 2016 at 11:41 answer added Frieder Ladisch timeline score: 30
Jun 3, 2016 at 11:02 answer added Neil Strickland timeline score: 14
Jun 3, 2016 at 10:30 comment added Shubhodip Mondal Sum of divisors, I suppose.
Jun 3, 2016 at 10:29 comment added Ehud Meir what is $\sigma_1$?
Jun 3, 2016 at 9:56 history edited Simon Rose CC BY-SA 3.0
fixed a typo suggested in a comment.
Jun 3, 2016 at 9:56 comment added Ulrich Pennig What is $\sigma_1(G)$? Should that be $\lvert G \rvert$?
Jun 3, 2016 at 9:43 history asked Simon Rose CC BY-SA 3.0