21000304808

素因数分解:

$2^3\times 7^1\times {\mathrm{375005443}}^1$

素因数の和:375005456

約数の個数: 16

約数和(自身を含む): 45000653280

約数和(自身を除く): 24000348472

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 375005443, 750010886, 1500021772, 2625038101, 3000043544, 5250076202, 10500152404, 21000304808]

約数ペア:

[(1, 21000304808), (2, 10500152404), (4, 5250076202), (7, 3000043544), (8, 2625038101), (14, 1500021772), (28, 750010886), (56, 375005443)]