multiplicative function
arithmetic function that is multiplicative for every pair of coprime integers
Liouville function
arithmetic function
Legendre symbol
multiplicative function with values 1, −1, 0
tau-function
giving the Fourier coefficients of the Ramanujan modular form
divisor function
arithmetic function related to the divisors of an integer
radical of an integer
the product of the prime factors of a given integer
completely multiplicative function
arithmetic function that is multiplicative for every pair of integers, not necessarily coprime