1980340

素因数分解:

$2^2\times 5^1\times {\mathrm{99017}}^1$

素因数の和:99026

約数の個数: 12

約数和(自身を含む): 4158756

約数和(自身を除く): 2178416

約数列:

[1, 2, 4, 5, 10, 20, 99017, 198034, 396068, 495085, 990170, 1980340]

約数ペア:

[(1, 1980340), (2, 990170), (4, 495085), (5, 396068), (10, 198034), (20, 99017)]