21201236

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17609}}^1$

素因数の和:17663

約数の個数: 24

約数和(自身を含む): 43391040

約数和(自身を除く): 22189804

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17609, 35218, 70436, 123263, 246526, 493052, 757187, 1514374, 3028748, 5300309, 10600618, 21201236]

約数ペア:

[(1, 21201236), (2, 10600618), (4, 5300309), (7, 3028748), (14, 1514374), (28, 757187), (43, 493052), (86, 246526), (172, 123263), (301, 70436), (602, 35218), (1204, 17609)]