A fabulous number

Let n n be an integer greater than 1 1 . The positive divisors of n n are d 1 , d 2 , , d k { d }_{ 1 },{ d }_{ 2 },\ldots,{ d }_{ k } , in which 1 = d 1 < d 2 < < d k = n 1={ d }_{ 1 }<{ d }_{ 2 }<\ldots<{ d }_{ k }=n . If n n satisfies n = d 2 2 + d 3 3 n={ d }_{ 2 }^{ 2 }+{ d }_{ 3 }^{ 3 } , what is the sum of all the possible values of n n ?


This problem appeared at the Mexican MO.


The answer is 68.

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1 solution

Akash Deep
Oct 24, 2015

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