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A218410
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Numbers k for which sigma(k)/k - 3/7 is an integer.
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5
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840, 55860, 1089270, 3666432, 5322240, 8714160, 10281600, 20109600, 21785400, 32104800, 9904204800, 10334134272, 4660073935104, 7322605472000, 11887123248000, 15387946358400, 78599399424000, 516876560449536, 750304684523520, 812193794048000
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OFFSET
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1,1
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COMMENTS
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Note that there are no terms with abundancy 10/7 or 17/7. - Michel Marcus, Jun 25 2013
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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