1988045380

素因数分解:

$2^2\times 5^1\times {\mathrm{99402269}}^1$

素因数の和:99402278

約数の個数: 12

約数和(自身を含む): 4174895340

約数和(自身を除く): 2186849960

約数列:

[1, 2, 4, 5, 10, 20, 99402269, 198804538, 397609076, 497011345, 994022690, 1988045380]

約数ペア:

[(1, 1988045380), (2, 994022690), (4, 497011345), (5, 397609076), (10, 198804538), (20, 99402269)]