Answer to Question #272608 in Combinatorics | Number Theory for Prathibha Rose

Combinatorics | Number Theory

Question #272608

Find all integers such that n=12

Expert's answer

Euler's totient function "\\varphi (n)" counts the positive integers up to a given integer n that are relatively prime to n

the integers n for which "\\varphi (n)=12" :

"13, 21, 26, 28, 36, 42"

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