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arXiv · 2411.11404

Arithmetic properties of MacMahon-type sums of divisors

James A. Sellers·Roberto Tauraso
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Abstract

In this paper, we prove several new infinite families of Ramanujan--like congruences satisfied by the coefficients of the generating function $U_t(a,q)$ which is an extension of MacMahon's generalized sum-of-divisors function. As a by-product, we also show that, for all $n\geq 0$, $\overline{B}_3(15n+7)\equiv 0 \pmod{5}$ where $\overline{B}_3(n)$ is the number of almost $3$-regular overpartitions of $n$.

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James A. Sellers, Roberto Tauraso. 2024-11-18. Arithmetic properties of MacMahon-type sums of divisors. https://arxiv.org/abs/2411.11404

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