divisor function

noun

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.”

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Meanings

noundivisor function (plural divisor functions)

plural divisor functions

  1. mathematicsA 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.

Translations

Polish funkcja τ
  • funkcja τfunction yielding the sum of the divisors of an integer
Cite this entry
APA

divisor function. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/divisor%20function

MLA

“divisor function.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/divisor%20function. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “divisor function,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/divisor%20function.

Source: divisor function on Wiktionary, CC BY-SA 4.0.