Numbers n such that the sum of the first k divisors of n is equal to n for some k.
1, 6, 24, 28, 496, 2016, 8128, 8190, 42336, 45864, 392448, 714240, 1571328
1 seqfan posts
Wed Aug 24 07:43:30 CEST 2011 [seqfan] Re: Who else has looked into Erdős-Nicolas numbers?