OFFSET
1,3
COMMENTS
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
FORMULA
a(p) = p^2 for p = prime.
a(A120737(n)) = 1.
EXAMPLE
For n = 6; tau(6)^6 / 6^tau(6) = 4^6 / 6^4 = 256 / 81; a(6) = 81.
MATHEMATICA
Denominator[#[[2]]^#[[1]]/#[[1]]^#[[2]]]&/@Table[{n, DivisorSigma[0, n]}, {n, 50}] (* Harvey P. Dale, Sep 15 2019 *)
PROG
(Magma) [Denominator((NumberOfDivisors(n)^n) / (n^NumberOfDivisors(n))): n in[1..100]]
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Jaroslav Krizek, Apr 16 2018
STATUS
approved