20849668

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17317}}^1$

素因数の和:17371

約数の個数: 24

約数和(自身を含む): 42671552

約数和(自身を除く): 21821884

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17317, 34634, 69268, 121219, 242438, 484876, 744631, 1489262, 2978524, 5212417, 10424834, 20849668]

約数ペア:

[(1, 20849668), (2, 10424834), (4, 5212417), (7, 2978524), (14, 1489262), (28, 744631), (43, 484876), (86, 242438), (172, 121219), (301, 69268), (602, 34634), (1204, 17317)]