OFFSET
1,1
COMMENTS
The first squarefree term of this sequence is the primorial a(34) = 30030.
Almost all terms of this sequence (in the sense of having relative density 1) are squarefree, that is in our case, the product of six distinct primes = A067885. - Charles R Greathouse IV, Aug 27 2021
LINKS
David A. Corneth, Table of n, a(n) for n = 1..10000
EXAMPLE
10920 has 64 divisors.
MATHEMATICA
Select[Range[100000], DivisorSigma[0, #]==64&]
PROG
(PARI) is(n) = numdiv(n) == 64 \\ David A. Corneth, Aug 27 2021
(Python)
from sympy import divisor_count
def ok(n): return divisor_count(n) == 64
print(list(filter(ok, range(31100)))) # Michael S. Branicky, Aug 27 2021
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Harvey P. Dale, Nov 20 2010
STATUS
approved