20258980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3911}}^1$

素因数の和:3964

約数の個数: 48

約数和(自身を含む): 49948416

約数和(自身を除く): 29689436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 3911, 5180, 7822, 15644, 19555, 27377, 39110, 54754, 78220, 109508, 136885, 144707, 273770, 289414, 547540, 578828, 723535, 1012949, 1447070, 2025898, 2894140, 4051796, 5064745, 10129490, 20258980]

約数ペア:

[(1, 20258980), (2, 10129490), (4, 5064745), (5, 4051796), (7, 2894140), (10, 2025898), (14, 1447070), (20, 1012949), (28, 723535), (35, 578828), (37, 547540), (70, 289414), (74, 273770), (140, 144707), (148, 136885), (185, 109508), (259, 78220), (370, 54754), (518, 39110), (740, 27377), (1036, 19555), (1295, 15644), (2590, 7822), (3911, 5180)]