161661680

素因数分解:

$2^4\times 5^1\times {\mathrm{2020771}}^1$

素因数の和:2020784

約数の個数: 20

約数和(自身を含む): 375863592

約数和(自身を除く): 214201912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2020771, 4041542, 8083084, 10103855, 16166168, 20207710, 32332336, 40415420, 80830840, 161661680]

約数ペア:

[(1, 161661680), (2, 80830840), (4, 40415420), (5, 32332336), (8, 20207710), (10, 16166168), (16, 10103855), (20, 8083084), (40, 4041542), (80, 2020771)]