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A218409
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Numbers k for which sigma(k)/k - 2/7 is an integer.
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6
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42, 3472, 56896, 544635, 2056320, 4021920, 4357080, 6420960, 234852352, 1980840960, 19017782784, 21231974400, 60129083392, 962070839296, 47911115564928, 53603154468864, 46152495793603584, 243298521749451168, 8785228837239816192
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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 9/7 or 23/7. - 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,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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