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A055712
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Numbers k such that k | sigma_8(k).
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7
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1, 84, 156, 204, 364, 476, 514, 1092, 1428, 2316, 2652, 2892, 6069, 6188, 6748, 12138, 12532, 16212, 16388, 18564, 20244, 24276, 30108, 37596, 39372, 49164, 63291, 78897, 87724, 99202, 114716, 126582, 147679, 157794, 167331
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OFFSET
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1,2
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COMMENTS
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sigma_8(k) is the sum of the 8th powers of the divisors of k (A013956).
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[8, n], n]==0, Print[n]], {n, 1, 10000}]
Select[Range[170000], Divisible[DivisorSigma[8, #], #]&] (* Harvey P. Dale, Sep 15 2019 *)
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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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