315555280

素因数分解:

$2^4\times 5^1\times {\mathrm{3944441}}^1$

素因数の和:3944454

約数の個数: 20

約数和(自身を含む): 733666212

約数和(自身を除く): 418110932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3944441, 7888882, 15777764, 19722205, 31555528, 39444410, 63111056, 78888820, 157777640, 315555280]

約数ペア:

[(1, 315555280), (2, 157777640), (4, 78888820), (5, 63111056), (8, 39444410), (10, 31555528), (16, 19722205), (20, 15777764), (40, 7888882), (80, 3944441)]