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A164649
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Numbers n such that sigma(n)/phi(n) = 36/25.
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2
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5797, 10153, 20377, 50953, 383719, 405449, 446039, 486421, 608399, 973709, 1321529, 1521311, 3086369, 3228511, 3451877, 3529813, 3859513, 4552373, 4767721, 5827679, 6194321, 6479599, 6724039, 6927893, 7038241, 7919197, 11696111, 15893773, 16894141, 16924873
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OFFSET
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1,1
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COMMENTS
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LINKS
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PROG
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(PARI) for( n=1, 1e7, sigma(n)==36/25*eulerphi(n) && print1(n", "))
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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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