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A175748 Numbers with 39 divisors. 3
36864, 102400, 200704, 495616, 692224, 1183744, 1478656, 2125764, 2166784, 3444736, 3936256, 5607424, 6885376, 7573504, 9048064, 11505664, 13286025, 14258176, 15241216, 18386944, 20647936, 21827584, 25563136, 26040609, 28217344, 32444416, 38539264, 41783296 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Numbers of the forms p^38 and p^12*q^2, where p and q are distinct primes.

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

OEIS Wiki, Index entries for number of divisors

FORMULA

A000005(a(n))=39.

MATHEMATICA

Select[Range[7000000], DivisorSigma[0, #]==39&] (* Vladimir Joseph Stephan Orlovsky, May 06 2011 *)

PROG

(PARI) is(n)=numdiv(n)==39 \\ Charles R Greathouse IV, Jun 19 2016

CROSSREFS

Cf. A139572, A175747.

Sequence in context: A212467 A187032 A251386 * A204104 A229509 A223304

Adjacent sequences:  A175745 A175746 A175747 * A175749 A175750 A175751

KEYWORD

nonn

AUTHOR

Jaroslav Krizek, Aug 27 2010

EXTENSIONS

Extended by T. D. Noe, May 08 2011

STATUS

approved

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Last modified October 18 07:42 EDT 2019. Contains 328146 sequences. (Running on oeis4.)