English Dictionary

divisor function

noun

(mathematics) A function yielding the sum of the divisors of an integer. It is denoted by the Greek letter σ (sigma).

The divisor function calculates the number of divisors of a given integer.

意味（1）

(mathematics) A function yielding the sum of the divisors of an integer. It is denoted by the Greek letter σ (sigma).

The value of the divisor function for 20 is 1 + 2 + 4 + 5 + 10 + 20 = 42, denoted as σ(20) = 42.