18720550

素因数分解:

$2^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{2297}}^1$

素因数の和:2472

約数の個数: 24

約数和(自身を含む): 35049096

約数和(自身を除く): 16328546

約数列:

[1, 2, 5, 10, 25, 50, 163, 326, 815, 1630, 2297, 4075, 4594, 8150, 11485, 22970, 57425, 114850, 374411, 748822, 1872055, 3744110, 9360275, 18720550]

約数ペア:

[(1, 18720550), (2, 9360275), (5, 3744110), (10, 1872055), (25, 748822), (50, 374411), (163, 114850), (326, 57425), (815, 22970), (1630, 11485), (2297, 8150), (4075, 4594)]