21257222

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{35311}}^1$

素因数の和:35363

約数の個数: 16

約数和(自身を含む): 37289472

約数和(自身を除く): 16032250

約数列:

[1, 2, 7, 14, 43, 86, 301, 602, 35311, 70622, 247177, 494354, 1518373, 3036746, 10628611, 21257222]

約数ペア:

[(1, 21257222), (2, 10628611), (7, 3036746), (14, 1518373), (43, 494354), (86, 247177), (301, 70622), (602, 35311)]