OFFSET
1,2
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..10000
FORMULA
EXAMPLE
For n = 6; a(n) = product of divisors (tau(6)) = 1*2*4 = 8.
MATHEMATICA
Table[Times@@Divisors[DivisorSigma[0, n]], {n, 80}] (* Harvey P. Dale, Dec 04 2021 *)
PROG
(Magma) [&*[d: d in Divisors(#[d: d in Divisors(n)])]: n in [1..100]]
(Python)
from math import isqrt
from sympy import divisor_count
def A280583(n): return (lambda m:(isqrt(m) if (c:=divisor_count(m)) & 1 else 1)*m**(c//2))(divisor_count(n)) # Chai Wah Wu, Jun 25 2022
CROSSREFS
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Jan 07 2017
STATUS
approved