19875405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{739}}^1$

素因数の和:921

約数の個数: 32

約数和(自身を含む): 34951680

約数和(自身を除く): 15076275

約数列:

[1, 3, 5, 11, 15, 33, 55, 163, 165, 489, 739, 815, 1793, 2217, 2445, 3695, 5379, 8129, 8965, 11085, 24387, 26895, 40645, 120457, 121935, 361371, 602285, 1325027, 1806855, 3975081, 6625135, 19875405]

約数ペア:

[(1, 19875405), (3, 6625135), (5, 3975081), (11, 1806855), (15, 1325027), (33, 602285), (55, 361371), (163, 121935), (165, 120457), (489, 40645), (739, 26895), (815, 24387), (1793, 11085), (2217, 8965), (2445, 8129), (3695, 5379)]