19965260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142609}}^1$

素因数の和:142625

約数の個数: 24

約数和(自身を含む): 47916960

約数和(自身を除く): 27951700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142609, 285218, 570436, 713045, 998263, 1426090, 1996526, 2852180, 3993052, 4991315, 9982630, 19965260]

約数ペア:

[(1, 19965260), (2, 9982630), (4, 4991315), (5, 3993052), (7, 2852180), (10, 1996526), (14, 1426090), (20, 998263), (28, 713045), (35, 570436), (70, 285218), (140, 142609)]