20887938

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{26987}}^1$

素因数の和:27038

約数の個数: 24

約数和(自身を含む): 46311408

約数和(自身を除く): 25423470

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 26987, 53974, 80961, 161922, 242883, 485766, 1160441, 2320882, 3481323, 6962646, 10443969, 20887938]

約数ペア:

[(1, 20887938), (2, 10443969), (3, 6962646), (6, 3481323), (9, 2320882), (18, 1160441), (43, 485766), (86, 242883), (129, 161922), (258, 80961), (387, 53974), (774, 26987)]