References to A109798

Second of a pair of compatible numbers, where two numbers m and n are compatible if sigma(n)-2dn=sigma(m)-2dm=m+n, for some proper divisors dn and dm of m and n respectively.
28, 40, 42, 52, 60, 96, 102, 104, 124, 110, 182, 182, 188, 210, 230, 234, 184, 358


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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