8162800

素因数分解:

$2^4\times 5^2\times {\mathrm{20407}}^1$

素因数の和:20425

約数の個数: 30

約数和(自身を含む): 19612088

約数和(自身を除く): 11449288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 20407, 40814, 81628, 102035, 163256, 204070, 326512, 408140, 510175, 816280, 1020350, 1632560, 2040700, 4081400, 8162800]

約数ペア:

[(1, 8162800), (2, 4081400), (4, 2040700), (5, 1632560), (8, 1020350), (10, 816280), (16, 510175), (20, 408140), (25, 326512), (40, 204070), (50, 163256), (80, 102035), (100, 81628), (200, 40814), (400, 20407)]