id:A055701 - OEIS Search Results

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Numbers n such that n | Sigma_7(n) + Phi(n)^7.

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1, 2, 10, 12, 26, 42, 172, 456, 588, 1326, 3315, 3635, 6468, 6720, 12102, 12922, 15288, 17836, 18810, 21756, 32984, 36108, 36603, 40572, 41748, 72905, 78120 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`sigma_7(n) is the sum of the 7th powers of the divisors of n.`
	MATHEMATICA	`Do[If[Mod[DivisorSigma[7, n]+EulerPhi[n]^7, n]==0, Print[n]], {n, 1, 10^5}]`
	CROSSREFS	`Sequence in context: A022367 A004686 A080139 this_sequence A154391 A035928 A014486` `Adjacent sequences: A055698 A055699 A055700 this_sequence A055702 A055703 A055704`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 09 2000`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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