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A055710
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Numbers k such that k | sigma_6(k).
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6
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1, 10, 26, 60, 65, 130, 150, 228, 260, 442, 650, 780, 876, 988, 1105, 1140, 1460, 1690, 1950, 2210, 2850, 2964, 3211, 3796, 4380, 4420, 4940, 5070, 5475, 5548, 6010, 6422, 8840, 9633, 10950, 11050, 11388, 11972, 12350, 12818, 13260, 13756, 14820, 16644
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OFFSET
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1,2
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COMMENTS
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sigma_6(k) is the sum of the 6th powers of the divisors of k (A013954).
Problem 11090 proves that this sequence is infinite. - T. D. Noe, Apr 18 2006
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LINKS
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MATHEMATICA
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Do[If[Mod[DivisorSigma[6, n], n]==0, Print[n]], {n, 1, 25000}]
Select[Range[20000], Divisible[DivisorSigma[6, #], #]&] (* Harvey P. Dale, Jun 04 2015 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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