208528280

素因数分解:

$2^3\times 5^1\times {\mathrm{5213207}}^1$

素因数の和:5213218

約数の個数: 16

約数和(自身を含む): 469188720

約数和(自身を除く): 260660440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5213207, 10426414, 20852828, 26066035, 41705656, 52132070, 104264140, 208528280]

約数ペア:

[(1, 208528280), (2, 104264140), (4, 52132070), (5, 41705656), (8, 26066035), (10, 20852828), (20, 10426414), (40, 5213207)]