OFFSET
3,1
COMMENTS
See A066272 for definition of anti-divisor.
LINKS
Dumitru Damian, Table of n, a(n) for n = 3..10000
EXAMPLE
The anti-divisors of 18 are 4, 5, 7, 12. Hence a(18) = 4*5*7*12/GCD(4*5*7*12, 18) = 280.
PROG
(Python)
import numpy as np
from sympy.ntheory.factor_ import antidivisors
def a093396(k):
return (m:=np.prod(antidivisors(k), dtype=object))//np.gcd(m, k, dtype=object)
{print(a093396(k), end = ', ') for k in range(3, 10**2)} # Dumitru Damian, Oct 16 2023
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Lior Manor, Mar 28 2004
EXTENSIONS
Name changed by Franklin T. Adams-Watters, Aug 21 2013
STATUS
approved