1640821755

素因数分解:

$3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{379}}^1\times {\mathrm{827}}^1$

素因数の和:1563

約数の個数: 32

約数和(自身を含む): 2642976000

約数和(自身を除く): 1002154245

約数列:

[1, 3, 5, 15, 349, 379, 827, 1047, 1137, 1745, 1895, 2481, 4135, 5235, 5685, 12405, 132271, 288623, 313433, 396813, 661355, 865869, 940299, 1443115, 1567165, 1984065, 4329345, 4701495, 109388117, 328164351, 546940585, 1640821755]

約数ペア:

[(1, 1640821755), (3, 546940585), (5, 328164351), (15, 109388117), (349, 4701495), (379, 4329345), (827, 1984065), (1047, 1567165), (1137, 1443115), (1745, 940299), (1895, 865869), (2481, 661355), (4135, 396813), (5235, 313433), (5685, 288623), (12405, 132271)]