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Old 2019-04-07, 16:35   #34
ThiloHarich's Avatar
Nov 2005

101 Posts


The sum of all divisors - not only the prime divisors I thought of - can be higher then the number itself. So I misinterpreted your model.

So yes abundant numbers are good candidates.
But for example 105 and 15 are no such numbers but are good 'k'.

Last fiddled with by ThiloHarich on 2019-04-07 at 17:01
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