20490260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{146359}}^1$

素因数の和:146375

約数の個数: 24

約数和(自身を含む): 49176960

約数和(自身を除く): 28686700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 146359, 292718, 585436, 731795, 1024513, 1463590, 2049026, 2927180, 4098052, 5122565, 10245130, 20490260]

約数ペア:

[(1, 20490260), (2, 10245130), (4, 5122565), (5, 4098052), (7, 2927180), (10, 2049026), (14, 1463590), (20, 1024513), (28, 731795), (35, 585436), (70, 292718), (140, 146359)]