2020004080

素因数分解:

$2^4\times 5^1\times {\mathrm{25250051}}^1$

素因数の和:25250064

約数の個数: 20

約数和(自身を含む): 4696509672

約数和(自身を除く): 2676505592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25250051, 50500102, 101000204, 126250255, 202000408, 252500510, 404000816, 505001020, 1010002040, 2020004080]

約数ペア:

[(1, 2020004080), (2, 1010002040), (4, 505001020), (5, 404000816), (8, 252500510), (10, 202000408), (16, 126250255), (20, 101000204), (40, 50500102), (80, 25250051)]