On certain equations and inequalities involving the arithmetical functions φ(n) and d(n)
Published: 14 June 2022
Notes on Number Theory and Discrete Mathematics
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Volume 28; 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
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