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A248022 Achilles numbers which are coprime to the sum of their divisors. 1
392, 800, 968, 1352, 2312, 2888, 3087, 3267, 3872, 4232, 5408, 6075, 6125, 6272, 6728, 7688, 7803, 9248, 10952, 11552, 12800, 13448, 14283, 14792, 15125, 15488, 16928, 17672, 19208, 20000, 21632, 22472, 22707, 25088, 26912, 27783, 27848, 29403, 29768, 30752, 33275 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

MATHEMATICA

achillesQ[n_] := Block[{ls = Last /@ FactorInteger@ n}, Min@ ls > 1 == GCD @@ ls]; Select[ Range@ 35000, achillesQ[ #] && GCD[#, DivisorSigma[1, #]] == 1 &]

CROSSREFS

Intersection of A052486 and A003624. - Michel Marcus, Sep 30 2014

Sequence in context: A187724 A035883 A235188 * A261379 A235313 A203917

Adjacent sequences:  A248019 A248020 A248021 * A248023 A248024 A248025

KEYWORD

nonn,easy

AUTHOR

Robert G. Wilson v, Sep 29 2014

STATUS

approved

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Last modified June 27 23:11 EDT 2022. Contains 354903 sequences. (Running on oeis4.)