[seqfan] A002046 Larger of amicable pair

Michael Porter ic_designer at verizon.net
Mon Apr 12 18:34:32 CEST 2010


This sequence is sorted according to the smaller of the amicable pair, which puts 76084, 123152, 202444, etc. out of numerical order.  Should this sequence be put in numerical order?

Amicable pairs are pairs of positive integers (n,m) such that the sum of proper divisors of n is m and the sum of proper divisors of m is n.  Here are the amicable pairs under 10^5:

220 284
1184 1210
2620 2924
5020 5564
6232 6368
10744 10856
12285 14595
17296 18416
63020 76084
66928 66992
67095 71145
69615 87633
79750 88730

- Michael




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