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A138815
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Divisors of 16775168 (half the 5th perfect number).
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1
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1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 8191, 16382, 32764, 65528, 131056, 262112, 524224, 1048448, 2096896, 4193792, 8387584, 16775168
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OFFSET
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1,2
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COMMENTS
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The n-th perfect number divided by 2 (A133028(n)) has 2*A090748(n) divisors, then this sequence has 24 members. First 12 members are the first 12 powers of 2 A000079. Last 12 members are multiples of 5th Mersenne prime A000668(5)=8191. a(n) written in base 2 has n digits. See A138825 for the structure of this sequence.
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LINKS
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MATHEMATICA
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PROG
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CROSSREFS
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KEYWORD
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easy,fini,full,nonn
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AUTHOR
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STATUS
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approved
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