9981680

素因数分解:

$2^4\times 5^1\times {\mathrm{124771}}^1$

素因数の和:124784

約数の個数: 20

約数和(自身を含む): 23207592

約数和(自身を除く): 13225912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 124771, 249542, 499084, 623855, 998168, 1247710, 1996336, 2495420, 4990840, 9981680]

約数ペア:

[(1, 9981680), (2, 4990840), (4, 2495420), (5, 1996336), (8, 1247710), (10, 998168), (16, 623855), (20, 499084), (40, 249542), (80, 124771)]