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A015773
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Numbers k such that phi(k) | sigma_14(k).
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10
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1, 2, 3, 6, 22, 33, 66, 118, 177, 354, 454, 750, 1298, 1362, 1372, 1947, 3894, 4116, 4994, 8706, 14982, 15092, 26786, 33906, 44250, 45276, 56750, 65542, 77858, 80358, 98961, 116787, 170250, 171500, 196626, 197922, 233574, 242844
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OFFSET
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1,2
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COMMENTS
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sigma_14(k) is the sum of the 14th powers of the divisors of k.
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LINKS
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MATHEMATICA
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Select[Range[250000], Divisible[DivisorSigma[14, #], EulerPhi[#]]&] (* Harvey P. Dale, Feb 02 2019 *)
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CROSSREFS
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Cf. A020492, A015759, A015761, A015762, A015763, A015764, A015765, A015766, A015767, A015768, A015769, A015770, A015771, A015774, A094470.
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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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