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 A172443 Numbers with exactly 64 divisors. 1
 7560, 9240, 10920, 11880, 13440, 14040, 14280, 15960, 16632, 17160, 17280, 18360, 19320, 19656, 20520, 20790, 21000, 21120, 22440, 24024, 24192, 24360, 24570, 24840, 24960, 25080, 25704, 26040, 26520, 27000, 28728, 29568, 29640, 30030, 30360, 30888, 31080 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The first squarefree term of this sequence is the primorial a(34) = 30030. Almost all terms of this sequence (in the sense of having relative density 1) are squarefree, that is in our case, the product of six distinct primes = A067885. - Charles R Greathouse IV, Aug 27 2021 LINKS David A. Corneth, Table of n, a(n) for n = 1..10000 EXAMPLE 10920 has 64 divisors. MATHEMATICA Select[Range[100000], DivisorSigma[0, #]==64&] PROG (PARI) is(n) = numdiv(n) == 64 \\ David A. Corneth, Aug 27 2021 (Python) from sympy import divisor_count def ok(n): return divisor_count(n) == 64 print(list(filter(ok, range(31100)))) # Michael S. Branicky, Aug 27 2021 CROSSREFS Cf. A067885. Sequence in context: A210171 A234987 A157322 * A190108 A308913 A145313 Adjacent sequences:  A172440 A172441 A172442 * A172444 A172445 A172446 KEYWORD nonn,easy AUTHOR Harvey P. Dale, Nov 20 2010 STATUS approved

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Last modified July 6 15:57 EDT 2022. Contains 355111 sequences. (Running on oeis4.)