20513745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65123}}^1$

素因数の和:65141

約数の個数: 24

約数和(自身を含む): 40637376

約数和(自身を除く): 20123631

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65123, 195369, 325615, 455861, 586107, 976845, 1367583, 2279305, 2930535, 4102749, 6837915, 20513745]

約数ペア:

[(1, 20513745), (3, 6837915), (5, 4102749), (7, 2930535), (9, 2279305), (15, 1367583), (21, 976845), (35, 586107), (45, 455861), (63, 325615), (105, 195369), (315, 65123)]