212820100

素因数分解:

$2^2\times 5^2\times {\mathrm{2128201}}^1$

素因数の和:2128215

約数の個数: 18

約数和(自身を含む): 461819834

約数和(自身を除く): 248999734

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 2128201, 4256402, 8512804, 10641005, 21282010, 42564020, 53205025, 106410050, 212820100]

約数ペア:

[(1, 212820100), (2, 106410050), (4, 53205025), (5, 42564020), (10, 21282010), (20, 10641005), (25, 8512804), (50, 4256402), (100, 2128201)]