21806456

素因数分解:

$2^3\times 7^1\times {\mathrm{389401}}^1$

素因数の和:389414

約数の個数: 16

約数和(自身を含む): 46728240

約数和(自身を除く): 24921784

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 389401, 778802, 1557604, 2725807, 3115208, 5451614, 10903228, 21806456]

約数ペア:

[(1, 21806456), (2, 10903228), (4, 5451614), (7, 3115208), (8, 2725807), (14, 1557604), (28, 778802), (56, 389401)]