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A069819 Numbers n such that 1/(sum(p|n,1/p)-1), where p are the prime divisors of n, is an integer. +0
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30, 60, 90, 120, 150, 180, 240, 270, 300, 360, 450, 480, 540, 600, 720, 750, 810, 858, 900, 960, 1080, 1200, 1350, 1440, 1500, 1620, 1716, 1722, 1800, 1920, 2160, 2250, 2400, 2430, 2574, 2700, 2880, 3000, 3240, 3432, 3444, 3600, 3750, 3840, 4050, 4320 (list; graph; listen)
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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.


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