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A175747 Numbers with 38 divisors. 4
786432, 1310720, 1835008, 2883584, 3407872, 4456448, 4980736, 6029312, 7602176, 8126464, 9699328, 10747904, 11272192, 12320768, 13893632, 15466496, 15990784, 17563648, 18612224, 19136512, 20709376, 21757952, 23330816, 25427968, 26476544, 27000832, 28049408 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Numbers of the forms p^37 and p^18*q^1, 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))=38.

MATHEMATICA

Select[Range[10000000], DivisorSigma[0, #]==38&] (* Vladimir Joseph Stephan Orlovsky, May 06 2011 *)

PROG

(PARI) is(n)=numdiv(n)==38 \\ Charles R Greathouse IV, Jun 19 2016

CROSSREFS

Cf. A175745, A175746, A139572.

Sequence in context: A184213 A205261 A157993 * A115175 A104949 A237895

Adjacent sequences:  A175744 A175745 A175746 * A175748 A175749 A175750

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 17 06:08 EDT 2019. Contains 328106 sequences. (Running on oeis4.)