[seqfan] Question about abundant numbers (A5101)

[Alonso Del Arte]

Given an abundant number *n*, is it always the case that there are at least
two subsets of *n*'s divisors that add up to *n* + 1?

e.g., *n* = 70, we see that obviously 1 + 70 = 71 but also 35 + 14 + 10 +
7 + 5 = 71.

Al

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Alonso del Arte
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