How many positive integers not exceeding 60 are relatively prime to 60?
Note
This is Euler's totient value φ(60). Removing multiples of its prime factors gives φ(60) = 16.
How many positive integers not exceeding 60 are relatively prime to 60?
This is Euler's totient value φ(60). Removing multiples of its prime factors gives φ(60) = 16.