20858618

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{359}}^1$

素因数の和:530

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15429382

約数列:

[1, 2, 11, 19, 22, 38, 139, 209, 278, 359, 418, 718, 1529, 2641, 3058, 3949, 5282, 6821, 7898, 13642, 29051, 49901, 58102, 75031, 99802, 150062, 548911, 948119, 1097822, 1896238, 10429309, 20858618]

約数ペア:

[(1, 20858618), (2, 10429309), (11, 1896238), (19, 1097822), (22, 948119), (38, 548911), (139, 150062), (209, 99802), (278, 75031), (359, 58102), (418, 49901), (718, 29051), (1529, 13642), (2641, 7898), (3058, 6821), (3949, 5282)]