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A181598
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Numbers m with divisor 8 | m and abundance sigma(m)-2*m = 8.
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12
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56, 368, 11096, 17816, 77744, 128768, 2087936, 2291936, 13174976, 35021696, 45335936, 381236216, 4856970752, 6800228816, 8589344768, 1461083549696, 1471763808896, 2199013818368
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OFFSET
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1,1
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COMMENTS
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a(19) > 10^13. - Giovanni Resta, Apr 02 2014
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LINKS
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Table of n, a(n) for n=1..18.
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FORMULA
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A088833 INTERSECT A008590. [R. J. Mathar, Nov 04 2010]
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PROG
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(PARI) isok(n) = !(n % 8) && (sigma(n) - 2*n == 8); \\ Michel Marcus, Feb 08 2016
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CROSSREFS
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Cf. A097498, A181595, A181596, A181597, A118372, A045768, A000396, A005101, A153501, A005820.
Sequence in context: A296823 A003783 A088833 * A181705 A219826 A075283
Adjacent sequences: A181595 A181596 A181597 * A181599 A181600 A181601
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KEYWORD
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nonn
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AUTHOR
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Vladimir Shevelev, Nov 01 2010
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EXTENSIONS
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Definition rephrased by R. J. Mathar, Nov 04 2010
a(16)-a(17) from Donovan Johnson, Dec 08 2011
a(18) from Giovanni Resta, Apr 02 2014
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STATUS
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approved
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