If n is a positive integer, what is the sum of the integers from 1 to n that are relatively prime to n? Thanks.
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What do you mean by "what is it"? What kind of expression are you looking for?
May be?... http://en.wikipedia.org/wiki/Relatively_prime http://en.wikipedia.org/wiki/Euler%27s_totient_function
Just what I wanted. Thanks!
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