205120880

素因数分解:

$2^4\times 5^1\times {\mathrm{2564011}}^1$

素因数の和:2564024

約数の個数: 20

約数和(自身を含む): 476906232

約数和(自身を除く): 271785352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2564011, 5128022, 10256044, 12820055, 20512088, 25640110, 41024176, 51280220, 102560440, 205120880]

約数ペア:

[(1, 205120880), (2, 102560440), (4, 51280220), (5, 41024176), (8, 25640110), (10, 20512088), (16, 12820055), (20, 10256044), (40, 5128022), (80, 2564011)]