21884080

素因数分解:

$2^4\times 5^1\times {\mathrm{273551}}^1$

素因数の和:273564

約数の個数: 20

約数和(自身を含む): 50880672

約数和(自身を除く): 28996592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273551, 547102, 1094204, 1367755, 2188408, 2735510, 4376816, 5471020, 10942040, 21884080]

約数ペア:

[(1, 21884080), (2, 10942040), (4, 5471020), (5, 4376816), (8, 2735510), (10, 2188408), (16, 1367755), (20, 1094204), (40, 547102), (80, 273551)]