[seqfan] Re: A122036

Matevž Markovič matevz.markovic.v at gmail.com
Mon Mar 21 14:21:14 CET 2011


If I understand this correctly, numbers in A122036 are:
- odd
- abundant (sum of all its proper divisors is bigger than 2*n)
- sum of any subset of their divisors (divisors D - {1,n}) never equals n
(A136446)

But in A136446 there are only even numbers. It is conjectured that an odd
number in A136446 exists, is that the reason for this limitation?

Thank you for your clarification!

                       Matevž Markovič



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