21252406

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{821}}^1$

素因数の和:916

約数の個数: 24

約数和(自身を含む): 37345104

約数和(自身を除く): 16092698

約数列:

[1, 2, 7, 14, 43, 86, 301, 602, 821, 1642, 1849, 3698, 5747, 11494, 12943, 25886, 35303, 70606, 247121, 494242, 1518029, 3036058, 10626203, 21252406]

約数ペア:

[(1, 21252406), (2, 10626203), (7, 3036058), (14, 1518029), (43, 494242), (86, 247121), (301, 70606), (602, 35303), (821, 25886), (1642, 12943), (1849, 11494), (3698, 5747)]