This is nice and it shouldn't be hard: Let be the number of distinct prime factors of We define Evaluate
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It's fairly easy to see that is multiplicative ( i.e. given we have ) Then: Now: ; Hence: Set to get: since
Originally Posted by PaulRS It's fairly easy to see that is multiplicative ( i.e. given we have ) Then: Now: ; Hence: Set to get: since correct! well done!
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