JP Journal of Algebra, Number Theory and Applications

The JP Journal of Algebra, Number Theory and Applications is a prestigious international journal indexed in the Emerging Sources Citation Index (ESCI). It publishes original research papers, both theoretical and applied in nature, in various branches of algebra and number theory. The journal also welcomes survey articles that contribute to the advancement of these fields.

Submit Article

ON THE SUM OF HIGHER DIVISOR FUNCTION WITH ALMOST EQUAL PRIME VARIABLES

Authors

  • Miao Lou

Keywords:

Higher divisor function, prime variables, circle method

DOI:

https://doi.org/10.17654/0972555525033

Abstract

Let $k, r \geq 2$ be integers, and let $\tau_k(n)$ denote the $k$ th divisor function. Let $\ell_r, \theta_r$ be defined in Theorem 1.1. Assuming that the integer $\ell>\ell_r$, we consider $Y=X^{\theta_r+\varepsilon}$ as it approaches infinity. We apply the Hardy-Littlewood circle method to derive an asymptotic formula for the sum

Received: June 20, 2025
Revised: July 15, 2025
Accepted: July 25, 2025

References

[1] C. Calderón and M. J. Velasco, On divisors of a quadratic form, Bol. Soc. Bras. Mat. 31 (2000), 81-91.

[2] Y. C. Ding and G. L. Zhou, Sums of the higher divisor function with prime summands, Czech. Math. J. 148 (2023), 621-631.

[3] N. Gafurov, On the sum of the number of divisors of a quadratic form, Dokl. Akad. Nauk Tadzhik. SSR 28 (1985), 371-375.

[4] N. Gafurov, On the number of divisors of a quadratic form, Proc. Steklov Inst. Math. 200 (1993), 137-148.

[5] R. T. Guo and W. G. Zhai, Some problems about the ternary quadratic form Acta Arith. 156 (2012), 101-121.

[6] L. Q. Hu and H. F. Liu, Sums of divisors of a quaternary quadratic form with almost equal variables, Ramanujan J. 40 (2016), 557-571.

[7] G. W. Hu and G. S. Lü, Sums of higher divisor functions, J. Number Theory 220 (2021), 61-74.

[8] L. Q. Hu and L. Yang, Sums of the triple divisor function over values of a quaternary quadratic form, Acta Arith. 183 (2018), 63-85.

[9] L. Q. Hu and Y. J. Yao, Sums of divisors of the ternary quadratic with almost equal variables, J. Number Theory 155 (2015), 248-263.

[10] K. Lapkova and N. H. Zhou, On the average sum of the kth divisor function over values of quadratic polynomials, Ramanujan J. 55 (2021), 849-872.

[11] J. Y. Liu, An iterative method in the Waring-Goldbach problem, Chebyshevskiĭ Sb. 5 (2005), 164-179.

[12] J. Y. Liu and T. Zhan, New Developments in the Additive Theory of Prime Numbers, World Scientific, Singapore, 2012.

[13] M. Lou, Sums of higher divisor functions with almost equal variables, Front. Math. 20 (2025), 603-615.

[14] M. Lou, Sums of higher divisor function of diagonal homogeneous forms with prime variables, Ramanujan J. (2025).

https://doi.org/10.1007/s11139-025-01201-8.

[15] Q. F. Sun and D. Y. Zhang, Sums of the triple divisor function over values of a ternary quadratic form, J. Number Theory 168 (2016), 215-246.

[16] B. Wei and T. D. Wooley, On sums of powers of almost equal primes, Proc. London Math. Soc. 111 (2015), 1130-1162.

[17] G. Yu, On the number of divisors of the quadratic form Canad. Math. Bull. 43 (2000), 239-256.

[18] L. L. Zhao, The sum of divisors of a quadratic form, Acta Arith. 163 (2014), 161 177.

[19] Y. T. Zhao, W. G. Zhai and J. J. Li, Sums of the kth divisor function of the ternary quadratic with prime variables, Ramanujan J. 60 (2023), 485-504.

[20] G. L. Zhou and Y. C. Ding, Sums of the higher divisor function of diagonal homogeneous forms, Ramanujan J. 59 (2022), 933-945.

Published

2025-09-11

Issue

Section

Articles

How to Cite

ON THE SUM OF HIGHER DIVISOR FUNCTION WITH ALMOST EQUAL PRIME VARIABLES. (2025). JP Journal of Algebra, Number Theory and Applications, 64(6), 611-638. https://doi.org/10.17654/0972555525033

Similar Articles

1-10 of 64

You may also start an advanced similarity search for this article.