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The smallest divisors' sum common to two prime powers both with a prime number of divisors: 31 = 1 + 2 + 22 + 23 + 24 = 1 + 5 + 52. [Beedassy]

 

  Submitted: 2009-07-17 12:42:07;   Last Modified: 2009-07-19 22:04:13.



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