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A137486
Numbers with 23 divisors.
18
4194304, 31381059609, 2384185791015625, 3909821048582988049, 81402749386839761113321, 3211838877954855105157369, 1174562876521148458974062689, 13569980418174090907801371961
OFFSET
1,1
COMMENTS
Maple implementation: see A030513.
22nd powers of primes. The n-th number with p divisors is equal to the n-th prime raised to power p-1, where p is prime. - Omar E. Pol, May 06 2008
FORMULA
A000005(a(n))=23.
a(n)=A000040(n)^(23-1)=A000040(n)^(22). - Omar E. Pol, May 06 2008
MATHEMATICA
Prime[Range[15]]^22 (* Vladimir Joseph Stephan Orlovsky, May 05 2011 *)
PROG
(PARI) a(n)=prime(n)^22 \\ Charles R Greathouse IV, Jun 19 2016
CROSSREFS
Cf. A137485 (22 divs), A137487 (24 divs).
Sequence in context: A016907 A017708 A010810 * A016967 A017039 A017123
KEYWORD
nonn,easy
AUTHOR
R. J. Mathar, Apr 22 2008
STATUS
approved