DivisorSigma, MoebiusMu, EulerPhi, LiouvilleLambda, SquaresR
Synopsis
#include <flint/fexpr_builtin.h>DivisorSigmaMoebiusMuEulerPhiLiouvilleLambdaSquaresRArithmetic functions: the divisor function DivisorSigma(k, n) (), the Möbius function MoebiusMu(n) (), Euler's totient function EulerPhi(n) (), the Liouville function LiouvilleLambda(n) () and the number of representations as a sum of squares SquaresR(k, n) ().
Cite this page
The FLINT team, “DivisorSigma, MoebiusMu, EulerPhi, LiouvilleLambda, SquaresR (fexpr_builtin.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/fexpr_builtin/DivisorSigma.html (generated 2026-11-02).
@misc{flint-doc-fexpr-builtin-DivisorSigma,
author = {{The FLINT team}},
title = {{DivisorSigma, MoebiusMu, EulerPhi, LiouvilleLambda, SquaresR (fexpr\_builtin.h)}},
howpublished = {FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev},
year = {2026},
url = {https://flintlib.org/doc/fexpr_builtin/DivisorSigma.html},
note = {Generated 2026-11-02}
}