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A225729
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Numbers n such that n < d(n)^(21/10), where d(n) is the number of divisors of n.
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12
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2, 3, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 24, 28, 30, 32, 36, 40, 42, 48, 54, 56, 60, 66, 70, 72, 78, 80, 84, 90, 96, 100, 108, 112, 120, 126, 132, 140, 144, 150, 156, 160, 168, 180, 192, 210, 216, 240, 252, 264, 270, 280, 288, 300, 312, 330, 336, 360, 396
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OFFSET
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1,1
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COMMENTS
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Alternatively, we could write n^10 < d(n)^21. The last odd number is a(10) = 15.
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LINKS
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MATHEMATICA
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t = {}; Do[If[n < DivisorSigma[0, n]^(21/10), AppendTo[t, n]], {n, 10^4}]; t
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CROSSREFS
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KEYWORD
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nonn,fini,full
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AUTHOR
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STATUS
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approved
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