21534615

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 39536640

約数和(自身を除く): 18002025

約数列:

[1, 3, 5, 9, 15, 31, 43, 45, 93, 129, 155, 215, 279, 359, 387, 465, 645, 1077, 1333, 1395, 1795, 1935, 3231, 3999, 5385, 6665, 11129, 11997, 15437, 16155, 19995, 33387, 46311, 55645, 59985, 77185, 100161, 138933, 166935, 231555, 478547, 500805, 694665, 1435641, 2392735, 4306923, 7178205, 21534615]

約数ペア:

[(1, 21534615), (3, 7178205), (5, 4306923), (9, 2392735), (15, 1435641), (31, 694665), (43, 500805), (45, 478547), (93, 231555), (129, 166935), (155, 138933), (215, 100161), (279, 77185), (359, 59985), (387, 55645), (465, 46311), (645, 33387), (1077, 19995), (1333, 16155), (1395, 15437), (1795, 11997), (1935, 11129), (3231, 6665), (3999, 5385)]