21920050

素因数分解:

$2^1\times 5^2\times {\mathrm{438401}}^1$

素因数の和:438413

約数の個数: 12

約数和(自身を含む): 40771386

約数和(自身を除く): 18851336

約数列:

[1, 2, 5, 10, 25, 50, 438401, 876802, 2192005, 4384010, 10960025, 21920050]

約数ペア:

[(1, 21920050), (2, 10960025), (5, 4384010), (10, 2192005), (25, 876802), (50, 438401)]