20782863

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 31122000

約数和(自身を除く): 10339137

約数列:

[1, 3, 9, 37, 111, 139, 333, 417, 449, 1251, 1347, 4041, 5143, 15429, 16613, 46287, 49839, 62411, 149517, 187233, 561699, 2309207, 6927621, 20782863]

約数ペア:

[(1, 20782863), (3, 6927621), (9, 2309207), (37, 561699), (111, 187233), (139, 149517), (333, 62411), (417, 49839), (449, 46287), (1251, 16613), (1347, 15429), (4041, 5143)]