281943680

素因数分解:

$2^7\times 5^1\times {\mathrm{440537}}^1$

素因数の和:440556

約数の個数: 32

約数和(自身を含む): 674023140

約数和(自身を除く): 392079460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 440537, 881074, 1762148, 2202685, 3524296, 4405370, 7048592, 8810740, 14097184, 17621480, 28194368, 35242960, 56388736, 70485920, 140971840, 281943680]

約数ペア:

[(1, 281943680), (2, 140971840), (4, 70485920), (5, 56388736), (8, 35242960), (10, 28194368), (16, 17621480), (20, 14097184), (32, 8810740), (40, 7048592), (64, 4405370), (80, 3524296), (128, 2202685), (160, 1762148), (320, 881074), (640, 440537)]