21126287

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5399}}^1$

素因数の和:5462

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 5484913

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 5399, 37793, 70187, 232157, 491309, 1625099, 3018041, 21126287]

約数ペア:

[(1, 21126287), (7, 3018041), (13, 1625099), (43, 491309), (91, 232157), (301, 70187), (559, 37793), (3913, 5399)]