12420080

素因数分解:

$2^4\times 5^1\times {\mathrm{155251}}^1$

素因数の和:155264

約数の個数: 20

約数和(自身を含む): 28876872

約数和(自身を除く): 16456792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 155251, 310502, 621004, 776255, 1242008, 1552510, 2484016, 3105020, 6210040, 12420080]

約数ペア:

[(1, 12420080), (2, 6210040), (4, 3105020), (5, 2484016), (8, 1552510), (10, 1242008), (16, 776255), (20, 621004), (40, 310502), (80, 155251)]