20481140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24977}}^1$

素因数の和:25027

約数の個数: 24

約数和(自身を含む): 44061192

約数和(自身を除く): 23580052

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 24977, 49954, 99908, 124885, 249770, 499540, 1024057, 2048114, 4096228, 5120285, 10240570, 20481140]

約数ペア:

[(1, 20481140), (2, 10240570), (4, 5120285), (5, 4096228), (10, 2048114), (20, 1024057), (41, 499540), (82, 249770), (164, 124885), (205, 99908), (410, 49954), (820, 24977)]