20844080

素因数分解:

$2^4\times 5^1\times {\mathrm{260551}}^1$

素因数の和:260564

約数の個数: 20

約数和(自身を含む): 48462672

約数和(自身を除く): 27618592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260551, 521102, 1042204, 1302755, 2084408, 2605510, 4168816, 5211020, 10422040, 20844080]

約数ペア:

[(1, 20844080), (2, 10422040), (4, 5211020), (5, 4168816), (8, 2605510), (10, 2084408), (16, 1302755), (20, 1042204), (40, 521102), (80, 260551)]