18091073380

素因数分解:

$2^2\times 5^1\times {\mathrm{904553669}}^1$

素因数の和:904553678

約数の個数: 12

約数和(自身を含む): 37991254140

約数和(自身を除く): 19900180760

約数列:

[1, 2, 4, 5, 10, 20, 904553669, 1809107338, 3618214676, 4522768345, 9045536690, 18091073380]

約数ペア:

[(1, 18091073380), (2, 9045536690), (4, 4522768345), (5, 3618214676), (10, 1809107338), (20, 904553669)]