21358456

素因数分解:

$2^3\times 7^1\times {\mathrm{381401}}^1$

素因数の和:381414

約数の個数: 16

約数和(自身を含む): 45768240

約数和(自身を除く): 24409784

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 381401, 762802, 1525604, 2669807, 3051208, 5339614, 10679228, 21358456]

約数ペア:

[(1, 21358456), (2, 10679228), (4, 5339614), (7, 3051208), (8, 2669807), (14, 1525604), (28, 762802), (56, 381401)]