989860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1151}}^1$

素因数の和:1203

約数の個数: 24

約数和(自身を含む): 2128896

約数和(自身を除く): 1139036

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1151, 2302, 4604, 5755, 11510, 23020, 49493, 98986, 197972, 247465, 494930, 989860]

約数ペア:

[(1, 989860), (2, 494930), (4, 247465), (5, 197972), (10, 98986), (20, 49493), (43, 23020), (86, 11510), (172, 5755), (215, 4604), (430, 2302), (860, 1151)]