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A015804
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Numbers k such that phi(k) + 11 | sigma(k).
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1
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8, 25, 34, 50, 304, 432, 1700, 1968, 2400, 2656, 13504, 44736, 59776, 1025536, 4148224, 12512256, 16685056, 66924544, 201043968, 51535085568, 68713578496
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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Select[Range[100000],
Divisible[DivisorSigma[1, #], EulerPhi[#] + 11] &] (* David Nacin, Feb 28 2012 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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