

A083262


a(n) = sigma(A046523(n)), sum of divisors of the least number with the same prime signature as n.


1



1, 3, 3, 7, 3, 12, 3, 15, 7, 12, 3, 28, 3, 12, 12, 31, 3, 28, 3, 28, 12, 12, 3, 60, 7, 12, 15, 28, 3, 72, 3, 63, 12, 12, 12, 91, 3, 12, 12, 60, 3, 72, 3, 28, 28, 12, 3, 124, 7, 28, 12, 28, 3, 60, 12, 60, 12, 12, 3, 168, 3, 12, 28, 127, 12, 72, 3, 28, 12, 72, 3, 195, 3, 12, 28, 28, 12, 72
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OFFSET

1,2


LINKS



MATHEMATICA

Table[DivisorSigma[1, Times @@ MapIndexed[Prime[First@ #2]^#1 &, Sort[FactorInteger[n][[All, 1]], Greater]]  Boole[n == 1]], {n, 78}] (* Michael De Vlieger, May 20 2017 *)


PROG

(PARI)


CROSSREFS



KEYWORD

nonn


AUTHOR



EXTENSIONS



STATUS

approved



