55708420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{691}}^1$

素因数の和:868

約数の個数: 48

約数和(自身を含む): 122068800

約数和(自身を除く): 66360380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 556, 580, 691, 695, 1382, 1390, 2764, 2780, 3455, 4031, 6910, 8062, 13820, 16124, 20039, 20155, 40078, 40310, 80156, 80620, 96049, 100195, 192098, 200390, 384196, 400780, 480245, 960490, 1920980, 2785421, 5570842, 11141684, 13927105, 27854210, 55708420]

約数ペア:

[(1, 55708420), (2, 27854210), (4, 13927105), (5, 11141684), (10, 5570842), (20, 2785421), (29, 1920980), (58, 960490), (116, 480245), (139, 400780), (145, 384196), (278, 200390), (290, 192098), (556, 100195), (580, 96049), (691, 80620), (695, 80156), (1382, 40310), (1390, 40078), (2764, 20155), (2780, 20039), (3455, 16124), (4031, 13820), (6910, 8062)]