21191301

素因数分解:

$3^6\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:768

約数の個数: 28

約数和(自身を含む): 32593260

約数和(自身を除く): 11401959

約数列:

[1, 3, 9, 27, 41, 81, 123, 243, 369, 709, 729, 1107, 2127, 3321, 6381, 9963, 19143, 29069, 29889, 57429, 87207, 172287, 261621, 516861, 784863, 2354589, 7063767, 21191301]

約数ペア:

[(1, 21191301), (3, 7063767), (9, 2354589), (27, 784863), (41, 516861), (81, 261621), (123, 172287), (243, 87207), (369, 57429), (709, 29889), (729, 29069), (1107, 19143), (2127, 9963), (3321, 6381)]