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A088843
Number of divisors of multiply-perfect numbers.
6
1, 4, 6, 16, 10, 24, 14, 96, 96, 80, 216, 320, 26, 384, 480, 288, 576, 224, 34, 1920, 2304, 1056, 480, 896, 38, 960, 1344, 3456, 1620, 5280, 6336, 3888, 10368, 9216, 2816, 3584, 6480, 16384, 5400, 9600, 62, 25344, 12960, 41472, 110592, 32256, 62208, 51840, 48384
OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..1600 (calculated from the b-file at A007691)
FORMULA
a(n) = A000005(A007691(n)).
MATHEMATICA
s = {}; Do[If[Divisible[DivisorSigma[1, n], n], AppendTo[s, DivisorSigma[0, n]]], {n, 1, 10^6}]; s (* Amiram Eldar, Jul 20 2019 *)
CROSSREFS
Sequence in context: A141042 A123667 A129597 * A154784 A328709 A062955
KEYWORD
nonn
AUTHOR
Labos Elemer, Nov 05 2003
EXTENSIONS
More terms from Michel Marcus, Sep 19 2013
Data corrected by Amiram Eldar, Jul 20 2019
STATUS
approved