129143680

素因数分解:

$2^7\times 5^1\times {\mathrm{201787}}^1$

素因数の和:201806

約数の個数: 32

約数和(自身を含む): 308735640

約数和(自身を除く): 179591960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 201787, 403574, 807148, 1008935, 1614296, 2017870, 3228592, 4035740, 6457184, 8071480, 12914368, 16142960, 25828736, 32285920, 64571840, 129143680]

約数ペア:

[(1, 129143680), (2, 64571840), (4, 32285920), (5, 25828736), (8, 16142960), (10, 12914368), (16, 8071480), (20, 6457184), (32, 4035740), (40, 3228592), (64, 2017870), (80, 1614296), (128, 1008935), (160, 807148), (320, 403574), (640, 201787)]