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Math Help - Sum of integers from 1 to n that are relatively prime to n

  1. #1
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    Sum of integers from 1 to n that are relatively prime to n

    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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  2. #2
    MHF Contributor Bruno J.'s Avatar
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    What do you mean by "what is it"? What kind of expression are you looking for?
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    MHF Contributor chisigma's Avatar
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    May be?...

    http://en.wikipedia.org/wiki/Relatively_prime

    http://en.wikipedia.org/wiki/Euler%27s_totient_function


    Kind regards

    \chi \sigma
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    Just what I wanted. Thanks!
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