21185689

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{877}}^1$

素因数の和:937

約数の個数: 24

約数和(自身を含む): 27024840

約数和(自身を除く): 5839151

約数列:

[1, 7, 17, 29, 49, 119, 203, 493, 833, 877, 1421, 3451, 6139, 14909, 24157, 25433, 42973, 104363, 178031, 432361, 730541, 1246217, 3026527, 21185689]

約数ペア:

[(1, 21185689), (7, 3026527), (17, 1246217), (29, 730541), (49, 432361), (119, 178031), (203, 104363), (493, 42973), (833, 25433), (877, 24157), (1421, 14909), (3451, 6139)]