21815276

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{18119}}^1$

素因数の和:18173

約数の個数: 24

約数和(自身を含む): 44647680

約数和(自身を除く): 22832404

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 18119, 36238, 72476, 126833, 253666, 507332, 779117, 1558234, 3116468, 5453819, 10907638, 21815276]

約数ペア:

[(1, 21815276), (2, 10907638), (4, 5453819), (7, 3116468), (14, 1558234), (28, 779117), (43, 507332), (86, 253666), (172, 126833), (301, 72476), (602, 36238), (1204, 18119)]