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Search: id:A077006
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| A077006 |
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Numbers n such that sigma(n)/n >= sigma(m)/m for all m <= n. |
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+0
2
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| 1, 2, 4, 6, 12, 24, 36, 48, 60, 120, 180, 240, 360, 720, 840, 1260, 1680, 2520, 5040, 10080, 15120, 25200, 27720, 55440, 110880, 166320, 277200, 332640, 360360, 554400
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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360360 is included in this sequence (but not in A004394) because its abundancy (sigma(n)/n = 48/11) is the same as that of the previous record holder (namely 332640). [From Gerard P. Michon (g.michon(AT)att.net), May 20 2009]
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CROSSREFS
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Almost same as A004394.
Sequence in context: A141551 A094348 A002182 this_sequence A004394 A166981 A137425
Adjacent sequences: A077003 A077004 A077005 this_sequence A077007 A077008 A077009
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KEYWORD
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nice,nonn
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AUTHOR
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Mike Speciner (ms(AT)alum.mit.edu), Oct 15 2003
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