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A137485
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Numbers with 22 divisors.
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5
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3072, 5120, 7168, 11264, 13312, 17408, 19456, 23552, 29696, 31744, 37888, 41984, 44032, 48128, 54272, 60416, 62464, 68608, 72704, 74752, 80896, 84992, 91136, 99328, 103424, 105472, 109568, 111616, 115712, 118098, 130048, 134144, 140288
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OFFSET
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1,1
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COMMENTS
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Maple implementation: see A030513.
Numbers of the form p^21 or p*q^10, where p and q are distinct primes. - R. J. Mathar, Mar 01 2010
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LINKS
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T. D. Noe, Table of n, a(n) for n = 1..1000
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FORMULA
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A000005(a(n))=22.
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MAPLE
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A137485=proc(q) local n;
for n from 1 to q do if tau(n)=22 then print(n); fi; od; end:
A137485(10^10);
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MATHEMATICA
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Select[Range[200000], DivisorSigma[0, #]==22&] (* Vladimir Joseph Stephan Orlovsky, May 05 2011 *)
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PROG
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(PARI) is(n)=numdiv(n)==22 \\ Charles R Greathouse IV, Jun 19 2016
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CROSSREFS
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Cf. A030513-A030516, A030626, A030627, A030634-A030638, A005179, A003680, A096932, A061286, A061283.
Sequence in context: A224970 A224116 A183726 * A251786 A334256 A262459
Adjacent sequences: A137482 A137483 A137484 * A137486 A137487 A137488
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KEYWORD
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nonn
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AUTHOR
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R. J. Mathar, Apr 22 2008
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STATUS
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approved
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