On certain equations and inequalities involving the arithmetical functions φ(n) and d(n)

14 June 2022

journal article
Published by Prof. Marin Drinov Publishing House of BAS (Bulgarian Academy of Sciences) in Notes on Number Theory and Discrete Mathematics

Vol. 28 (2)
https://doi.org/10.7546/nntdm.2022.28.2.376-379

Abstract

By using the results and methods of [1], we will study the equation \varphi(n) + d(n) = \frac{n}{2} and the related inequalities. The equation \varphi(n) + d^2(n)=2n will be solved, too.

Keywords

FUNCTIONS
ARITHMETICAL
SOLVED
FRAC
INEQUALITIES INVOLVING
EQUATIONS AND INEQUALITIES