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A048657
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Number of non-unitary divisors of n!.
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4
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0, 0, 0, 4, 8, 22, 44, 80, 144, 254, 508, 760, 1520, 2528, 3968, 5312, 10624, 14560, 29120, 40784, 60544, 95744, 191488, 242368, 339520, 531712, 676864, 916768, 1833536, 2331776, 4663552, 5527552, 7862272, 12163072, 16420864, 19593472
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OFFSET
| 1,4
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EXAMPLE
| n=5, 5!=120 has 16 divisors of which 8 are not unitary:{2,60,4,30,6,20,10,12} while {1,120,3,40,5,24,15,16} are the unitary ones.
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CROSSREFS
| A000005(n!) - 2^(A000720(n)). Cf. A027423, A034444, A048656.
Sequence in context: A200149 A153765 A003606 * A175655 A000639 A190795
Adjacent sequences: A048654 A048655 A048656 * A048658 A048659 A048660
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu)
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