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A015872
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Numbers k such that phi(k + 6) | sigma(k) + 6.
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0
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10, 20, 26, 58, 122, 1018, 1040, 2042, 8186, 32762, 522752, 2097146, 8388602, 9898496, 16871744, 33554426, 1073741818, 1630145024
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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, #] + 6, EulerPhi[# + 6]] &] (* David Nacin, Feb 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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