20004080

素因数分解:

$2^4\times 5^1\times {\mathrm{250051}}^1$

素因数の和:250064

約数の個数: 20

約数和(自身を含む): 46509672

約数和(自身を除く): 26505592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250051, 500102, 1000204, 1250255, 2000408, 2500510, 4000816, 5001020, 10002040, 20004080]

約数ペア:

[(1, 20004080), (2, 10002040), (4, 5001020), (5, 4000816), (8, 2500510), (10, 2000408), (16, 1250255), (20, 1000204), (40, 500102), (80, 250051)]