21395560

素因数分解:

$2^3\times 5^1\times {\mathrm{534889}}^1$

素因数の和:534900

約数の個数: 16

約数和(自身を含む): 48140100

約数和(自身を除く): 26744540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 534889, 1069778, 2139556, 2674445, 4279112, 5348890, 10697780, 21395560]

約数ペア:

[(1, 21395560), (2, 10697780), (4, 5348890), (5, 4279112), (8, 2674445), (10, 2139556), (20, 1069778), (40, 534889)]