18407780

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{3851}}^1$

素因数の和:4099

約数の個数: 24

約数和(自身を含む): 38828160

約数和(自身を除く): 20420380

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 3851, 4780, 7702, 15404, 19255, 38510, 77020, 920389, 1840778, 3681556, 4601945, 9203890, 18407780]

約数ペア:

[(1, 18407780), (2, 9203890), (4, 4601945), (5, 3681556), (10, 1840778), (20, 920389), (239, 77020), (478, 38510), (956, 19255), (1195, 15404), (2390, 7702), (3851, 4780)]