389715280

素因数分解:

$2^4\times 5^1\times {\mathrm{4871441}}^1$

素因数の和:4871454

約数の個数: 20

約数和(自身を含む): 906088212

約数和(自身を除く): 516372932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4871441, 9742882, 19485764, 24357205, 38971528, 48714410, 77943056, 97428820, 194857640, 389715280]

約数ペア:

[(1, 389715280), (2, 194857640), (4, 97428820), (5, 77943056), (8, 48714410), (10, 38971528), (16, 24357205), (20, 19485764), (40, 9742882), (80, 4871441)]