OFFSET
1,2
FORMULA
EXAMPLE
a(6) = 1*pod(1) * 2*pod(2) * 3*pod(3) * 6*pod(6) = (1*1) * (2*2) * (3*3) * (6*36) = 7776.
MATHEMATICA
Array[Times @@ Map[# Apply[Times, Divisors@ #] &, Divisors@ #] &, 31] (* Michael De Vlieger, Mar 24 2019 *)
PROG
(Magma) [&*[d * &*[c: c in Divisors(d)]: d in Divisors(n)]: n in [1..100]]
(PARI) a(n) = my(d=divisors(n), p=1); fordiv(n, d, p*=d*vecprod(divisors(d))); p; \\ Michel Marcus, Mar 22 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Mar 22 2019
STATUS
approved