20490020

素因数分解:

$2^2\times 5^1\times {\mathrm{233}}^1\times {\mathrm{4397}}^1$

素因数の和:4639

約数の個数: 24

約数和(自身を含む): 43223544

約数和(自身を除く): 22733524

約数列:

[1, 2, 4, 5, 10, 20, 233, 466, 932, 1165, 2330, 4397, 4660, 8794, 17588, 21985, 43970, 87940, 1024501, 2049002, 4098004, 5122505, 10245010, 20490020]

約数ペア:

[(1, 20490020), (2, 10245010), (4, 5122505), (5, 4098004), (10, 2049002), (20, 1024501), (233, 87940), (466, 43970), (932, 21985), (1165, 17588), (2330, 8794), (4397, 4660)]