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Search: id:A007357
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| A007357 |
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Infinitary perfect numbers.
(Formerly M4267)
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+0
8
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| 6, 60, 90, 36720, 12646368, 22276800, 126463680, 4201148160, 28770487200, 287704872000, 1446875426304, 2548696550400, 14468754263040, 590325173932032, 3291641594841600, 8854877608980480, 32916415948416000
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
G. L. Cohen, On an integer's infinitary divisors, Math. Comp., 54 (1990), 395-411.
G. L. Cohen, personal communication.
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LINKS
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Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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CROSSREFS
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Sequence in context: A136937 A074452 A007358 this_sequence A002827 A137498 A036283
Adjacent sequences: A007354 A007355 A007356 this_sequence A007358 A007359 A007360
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from Eric Weisstein (eric(AT)weisstein.com), Jan 27, 2004.
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