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A218430
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Numbers k for which sigma(k)/k - 2/9 is an integer.
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5
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54, 2744280, 6191640, 182494620, 653425920, 702989280, 27025270272, 72475361280, 76172903718912, 15224461545984768, 1688635722988634112, 5953066676035614584064, 1608903162935227680030720, 14600472124349965895417376, 2263986000385276007625523200
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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 here with abundancy 11/9 (k=1) or 29/9 (k=3). - 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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