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Search: id:a030630
Displaying 1-1 of 1 result found. page 1
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A030630 Numbers with 12 divisors. +0
15
60, 72, 84, 90, 96, 108, 126, 132, 140, 150, 156, 160, 198, 200, 204, 220, 224, 228, 234, 260, 276, 294, 306, 308, 315, 340, 342, 348, 350, 352, 364, 372, 380, 392, 414, 416, 444, 460, 476, 486, 490, 492, 495, 500, 516, 522, 525, 532, 544, 550 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Numbers of the form p^11 A079395, p*q^5 A178740, p*q*r^2 A085987, or p^2*q^3 A143610, where p, q and r are distinct primes. - R. J. Mathar, Mar 01 2010, Mar 17 2010
LINKS
MATHEMATICA
Select[Range[600], Length[Divisors[ # ]] == 12 &] (* Stefan Steinerberger, Apr 10 2006 *)
Select[Range[600], DivisorSigma[0, #]==12&] (* Harvey P. Dale, Jun 01 2016 *)
PROG
(PARI) for(n=1, 1e3, if(numdiv(n)==12, print1(n, ", "))) \\ Altug Alkan, Nov 11 2015
KEYWORD
nonn
AUTHOR
STATUS
approved
page 1

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Last modified August 22 04:48 EDT 2024. Contains 375356 sequences. (Running on oeis4.)