UGLI, Yuldoshev Mansur Najmiddin. A Natural Number is the Number and Sum of Natural Divisors. International Journal of Innovative Analyses and Emerging Technology, [S. l.], v. 3, n. 2, p. 11–14, 2023. Disponível em: https://www.oajournals.net/index.php/ijiaet/article/view/1890. Acesso em: 13 jul. 2025.