991107

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 1585584

約数和(自身を除く): 594477

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 197, 387, 559, 591, 1677, 1773, 2561, 5031, 7683, 8471, 23049, 25413, 76239, 110123, 330369, 991107]

約数ペア:

[(1, 991107), (3, 330369), (9, 110123), (13, 76239), (39, 25413), (43, 23049), (117, 8471), (129, 7683), (197, 5031), (387, 2561), (559, 1773), (591, 1677)]