320467480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{195407}}^1$

素因数の和:195459

約数の個数: 32

約数和(自身を含む): 738642240

約数和(自身を除く): 418174760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 195407, 390814, 781628, 977035, 1563256, 1954070, 3908140, 7816280, 8011687, 16023374, 32046748, 40058435, 64093496, 80116870, 160233740, 320467480]

約数ペア:

[(1, 320467480), (2, 160233740), (4, 80116870), (5, 64093496), (8, 40058435), (10, 32046748), (20, 16023374), (40, 8011687), (41, 7816280), (82, 3908140), (164, 1954070), (205, 1563256), (328, 977035), (410, 781628), (820, 390814), (1640, 195407)]