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A045770
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Numbers k such that sigma(k) == 8 (mod k).
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26
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1, 10, 49, 56, 368, 836, 11096, 17816, 45356, 77744, 91388, 128768, 254012, 388076, 2087936, 2291936, 13174976, 29465852, 35021696, 45335936, 120888092, 260378492, 381236216, 775397948, 3381872252, 4856970752, 6800228816, 8589344768, 44257207676, 114141404156, 1461083549696, 1471763808896, 2199013818368
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OFFSET
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1,2
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COMMENTS
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Every number of the form 2^(j-1)*(2^j - 9), where 2^j - 9 is prime, is a term. - Jon E. Schoenfield, Jun 02 2019
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LINKS
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MATHEMATICA
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Join[{1}, Select[Range[8000000], Mod[DivisorSigma[1, #], #]==8 &]] (* Vincenzo Librandi, Mar 11 2014 *)
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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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EXTENSIONS
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STATUS
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approved
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