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Three Product Tease (Posted on 2014-06-12) Difficulty: 3 of 5
Define P(n) as the sum of all the positive integers that are less than n and relatively prime to n.

Find all possible positive integer values of n such that P(n) = 3n, and prove that there are no others.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
SolutionSketch of prooftomarken2014-06-12 12:29:35
Solutionnumbers without proof of completenessCharlie2014-06-12 11:37:50
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