66978821

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{17117}}^1$

素因数の和:17180

約数の個数: 16

約数和(自身を含む): 84357504

約数和(自身を除く): 17378683

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 17117, 119819, 222521, 736031, 1557647, 5152217, 9568403, 66978821]

約数ペア:

[(1, 66978821), (7, 9568403), (13, 5152217), (43, 1557647), (91, 736031), (301, 222521), (559, 119819), (3913, 17117)]