21870459

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{4793}}^1$

素因数の和:4828

約数の個数: 24

約数和(自身を含む): 35092080

約数和(自身を除く): 13221621

約数列:

[1, 3, 9, 13, 27, 39, 117, 169, 351, 507, 1521, 4563, 4793, 14379, 43137, 62309, 129411, 186927, 560781, 810017, 1682343, 2430051, 7290153, 21870459]

約数ペア:

[(1, 21870459), (3, 7290153), (9, 2430051), (13, 1682343), (27, 810017), (39, 560781), (117, 186927), (169, 129411), (351, 62309), (507, 43137), (1521, 14379), (4563, 4793)]