References to A111592

Admirable numbers. A number n is admirable if there exists a proper divisor d' of n such that sigma(n)-2d'=2n, where sigma(n) is the sum of all divisors of n.
12, 20, 24, 30, 40, 42, 54, 56, 66, 70, 78, 84, 88, 102, 104, 114, 120, 138, 140, 174


1 seqfan posts

Thu Dec 2 18:16:11 CET 2010    [seqfan] Re: Trotter Math

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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