20516349

素因数分解:

$3^1\times 7^2\times {\mathrm{233}}^1\times {\mathrm{599}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 32011200

約数和(自身を除く): 11494851

約数列:

[1, 3, 7, 21, 49, 147, 233, 599, 699, 1631, 1797, 4193, 4893, 11417, 12579, 29351, 34251, 88053, 139567, 418701, 976969, 2930907, 6838783, 20516349]

約数ペア:

[(1, 20516349), (3, 6838783), (7, 2930907), (21, 976969), (49, 418701), (147, 139567), (233, 88053), (599, 34251), (699, 29351), (1631, 12579), (1797, 11417), (4193, 4893)]