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Omni-MATH / For a given positive integer n, we define φ(n) to be the number of positive integers less than or equal to n which share no common prime factors with n. Find all positive integers … · Discussion

Discussing For a given positive integer n, we define φ(n) to be the number of positive integers less than or equal to n which share no common prime factors with n. Find all positive integers … · Omni-MATH

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