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A175743
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Numbers with 33 divisors.
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3
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9216, 25600, 50176, 123904, 173056, 236196, 295936, 369664, 541696, 861184, 984064, 1401856, 1476225, 1721344, 1893376, 2262016, 2876416, 2893401, 3564544, 3810304, 4596736, 5161984, 5456896, 6390784, 7054336, 7144929, 8111104, 9634816, 9979281, 10445824
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OFFSET
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1,1
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COMMENTS
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Numbers of the form p^32 and p^10*q^2, where p and q are distinct primes.
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LINKS
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FORMULA
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Sum_{n>=1} 1/a(n) = P(2)*P(10) - P(12) + P(32) = 0.000203328..., where P is the prime zeta function. - Amiram Eldar, Jul 03 2022
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MATHEMATICA
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Select[Range[2000000], DivisorSigma[0, #]==33&] (* Harvey P. Dale, Jan 26 2011 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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