Inspired by Otto Bretscher (Very easy version)

( p 1729 ϕ ( p ) ) + ( p 2016 ϕ ( p ) ) = ? \large \left ( \displaystyle\sum_{p\mid 1729}\phi (p) \right )+\left ( \displaystyle \sum_{p\mid 2016}\phi (p) \right )= \, ?

Notation


Similar Problem .


The answer is 3745.

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1 solution

Deepanshu Dhruw
Jan 13, 2016

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