21351568

素因数分解:

$2^4\times 7^1\times {\mathrm{190639}}^1$

素因数の和:190654

約数の個数: 20

約数和(自身を含む): 47278720

約数和(自身を除く): 25927152

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 190639, 381278, 762556, 1334473, 1525112, 2668946, 3050224, 5337892, 10675784, 21351568]

約数ペア:

[(1, 21351568), (2, 10675784), (4, 5337892), (7, 3050224), (8, 2668946), (14, 1525112), (16, 1334473), (28, 762556), (56, 381278), (112, 190639)]