A059464 Numbers which are the sum of their proper divisors containing the digit 5.

1506, 1518, 3012, 3036, 3156, 3174, 4506, 6312, 7512, 9012, 9174, 10518, 10524, 10536, 10554, 13506, 15006, 15018, 15102, 15126, 15144, 15156, 15186, 15192, 15306, 15516, 15906, 16518, 17106, 17124, 17142, 17148, 17718, 19506, 19518

Offset

1,1

Links

Table of n, a(n) for n=1..35.

Mathematica

spd5Q[n_]:=Total[Select[Most[Rest[Divisors[n]]], DigitCount[#, 10, 5]>0&]] == n; Select[Range[4, 20000], spd5Q] (* Harvey P. Dale, Jul 31 2020 *)

Crossrefs

Cf. A059461, A271448, A059462, A059463, A059465, A059466, A059467, A059468.

Sequence in context: A181706 A092725 A097034 * A096021 A190032 A237319

Adjacent sequences: A059461 A059462 A059463 * A059465 A059466 A059467

Keyword

base,nonn

Author

Erich Friedman, Feb 03 2001

Status

approved