A000079 and the least deficient numbers

Max relf at unn.ac.ru
Sun Dec 26 09:22:55 CET 2004

A000079 claims that the powers of 2 coincides with the least deficient numbers. This claim is repeated by MathWorld at http://mathworld.wolfram.com/LeastDeficientNumber.html with the only reference to A000079.

Is it trivial to show that there are no other least deficient numbers besides the powers of 2?
Do you have any references to the proof?


More information about the SeqFan mailing list