11981680

素因数分解:

$2^4\times 5^1\times {\mathrm{149771}}^1$

素因数の和:149784

約数の個数: 20

約数和(自身を含む): 27857592

約数和(自身を除く): 15875912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149771, 299542, 599084, 748855, 1198168, 1497710, 2396336, 2995420, 5990840, 11981680]

約数ペア:

[(1, 11981680), (2, 5990840), (4, 2995420), (5, 2396336), (8, 1497710), (10, 1198168), (16, 748855), (20, 599084), (40, 299542), (80, 149771)]