New properties of arithmetic functions related to gcd and lcm

This paper explores additional properties of the arithmetic functions $f_\alpha(n)$ and $g_\alpha(n)$, defined respectively by $f_\alpha(n) = \prod_{i=1}^r p_i^{(e_i, \alpha)}$ and $g_\alpha(n) = \prod_{i=1}^r p_i^{[e_i, \alpha]}$, where $n = \prod_{i=1}^r p_i^{e_i}$ is the prime factorization of a positive integer $n>1$, \((a, b)\) and \([a, b]\) denote, respectively the greatest common divisor and the least common multiple of any two integers \(a\) and \(b\). These functions and some of their properties have been introduced and investigated in previous works. In this paper, we establish several new theorems that reveal deeper insights into the relationships between these functions.

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Publication Details

Journal
Notes on Number Theory and Discrete Mathematics
Published
2025-04-01
DOI
https://doi.org/10.7546/nntdm.2025.31.1.91-97
Primary Topic
Advanced Mathematical Identities
Type
article
Field-Weighted Citation Impact
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article

New properties of arithmetic functions related to gcd and lcm

Brahim Mittou
Notes on Number Theory and Discrete Mathematics
Advanced Mathematical Identities
article

New properties of arithmetic functions related to gcd and lcm

Brahim Mittou
article en

Abstract

This paper explores additional properties of the arithmetic functions $f_\alpha(n)$ and $g_\alpha(n)$, defined respectively by $f_\alpha(n) = \prod_{i=1}^r p_i^{(e_i, \alpha)}$ and $g_\alpha(n) = \prod_{i=1}^r p_i^{[e_i, \alpha]}$, where $n = \prod_{i=1}^r p_i^{e_i}$ is the prime factorization of a positive integer $n>1$, \((a, b)\) and \([a, b]\) denote, respectively the greatest common divisor and the least common multiple of any two integers \(a\) and \(b\). These functions and some of their properties have been introduced and investigated in previous works. In this paper, we establish several new theorems that reveal deeper insights into the relationships between these functions.

Notes on Number Theory and Discrete MathematicsVol. 31(1)
University of Ouargla (DZ)
Openalex Percentile: Top 89%
Advanced Mathematical Identities
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