DIMA, Andreea. Some Equations Concerning the Sum of Divisors Function. The PUMP Journal of Undergraduate Research, [S. l.], v. 8, p. 374–380, 2025. DOI: 10.46787/pump.v8i.6178. Disponível em: https://journals.calstate.edu/pump/article/view/6178. Acesso em: 25 sep. 2025.