Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In mathematics, and specifically in number theory, a divisor function is an arithmetical function related to the divisors of an integer. When referred to as the divisor function, it counts the number of divisors of an integer. It appears in a number of remarkable identities, including relationships on the Riemann zeta function and the Eisenstein series of modular forms. Divisor functions were studied by Ramanujan, who gave a number of important congruences and identities.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.