21056080

素因数分解:

$2^4\times 5^1\times {\mathrm{263201}}^1$

素因数の和:263214

約数の個数: 20

約数和(自身を含む): 48955572

約数和(自身を除く): 27899492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263201, 526402, 1052804, 1316005, 2105608, 2632010, 4211216, 5264020, 10528040, 21056080]

約数ペア:

[(1, 21056080), (2, 10528040), (4, 5264020), (5, 4211216), (8, 2632010), (10, 2105608), (16, 1316005), (20, 1052804), (40, 526402), (80, 263201)]