Problem 60516. Compute the totient summatory function

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Cody Problem 656 deals with the totient function, denoted by which counts the numbers less than n that are relatively prime to n. The first five values of the totient are 1, 1, 2, 2, and 4.

The totient summatory function is the sum of the values of from to n. Therefore, .

Write a function to compute the totient summatory function.

Optional: determine the connection between the totient summatory function and the Farey sequence.

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100.0% Correct | 0.0% Incorrect

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Last Solution submitted on Jul 25, 2024

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