18711485

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 25872000

約数和(自身を除く): 7160515

約数列:

[1, 5, 13, 19, 65, 95, 109, 139, 247, 545, 695, 1235, 1417, 1807, 2071, 2641, 7085, 9035, 10355, 13205, 15151, 26923, 34333, 75755, 134615, 171665, 196963, 287869, 984815, 1439345, 3742297, 18711485]

約数ペア:

[(1, 18711485), (5, 3742297), (13, 1439345), (19, 984815), (65, 287869), (95, 196963), (109, 171665), (139, 134615), (247, 75755), (545, 34333), (695, 26923), (1235, 15151), (1417, 13205), (1807, 10355), (2071, 9035), (2641, 7085)]