A130674 a(n) = d(n)!, where d denotes the number of divisors of n.

1, 2, 2, 6, 2, 24, 2, 24, 6, 24, 2, 720, 2, 24, 24, 120, 2, 720, 2, 720, 24, 24, 2, 40320, 6, 24, 24, 720, 2, 40320, 2, 720, 24, 24, 24, 362880, 2, 24, 24, 40320, 2, 40320, 2, 720, 720, 24, 2, 3628800, 6, 720, 24, 720, 2, 40320, 24, 40320, 24, 24, 2, 479001600, 2, 24

Offset

1,2

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

DivisorSigma[0, Range[70]]! (* Harvey P. Dale, Oct 06 2011 *)

Crossrefs

Cf. A000005.

Sequence in context: A369867 A324158 A196441 * A284839 A286376 A100346

Adjacent sequences: A130671 A130672 A130673 * A130675 A130676 A130677

Keyword

nonn

Author

Giovanni Teofilatto, Aug 12 2007

Status

approved