20527340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23869}}^1$

素因数の和:23921

約数の個数: 24

約数和(自身を含む): 44111760

約数和(自身を除く): 23584420

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23869, 47738, 95476, 119345, 238690, 477380, 1026367, 2052734, 4105468, 5131835, 10263670, 20527340]

約数ペア:

[(1, 20527340), (2, 10263670), (4, 5131835), (5, 4105468), (10, 2052734), (20, 1026367), (43, 477380), (86, 238690), (172, 119345), (215, 95476), (430, 47738), (860, 23869)]