404013640

素因数分解:

$2^3\times 5^1\times {\mathrm{1439}}^1\times {\mathrm{7019}}^1$

素因数の和:8469

約数の個数: 32

約数和(自身を含む): 909792000

約数和(自身を除く): 505778360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1439, 2878, 5756, 7019, 7195, 11512, 14038, 14390, 28076, 28780, 35095, 56152, 57560, 70190, 140380, 280760, 10100341, 20200682, 40401364, 50501705, 80802728, 101003410, 202006820, 404013640]

約数ペア:

[(1, 404013640), (2, 202006820), (4, 101003410), (5, 80802728), (8, 50501705), (10, 40401364), (20, 20200682), (40, 10100341), (1439, 280760), (2878, 140380), (5756, 70190), (7019, 57560), (7195, 56152), (11512, 35095), (14038, 28780), (14390, 28076)]