20808007857

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25406603}}^1$

素因数の和:25406629

約数の個数: 24

約数和(自身を含む): 36992015424

約数和(自身を除く): 16184007567

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25406603, 76219809, 177846221, 228659427, 330285839, 533538663, 990857517, 1600615989, 2312000873, 2972572551, 6936002619, 20808007857]

約数ペア:

[(1, 20808007857), (3, 6936002619), (7, 2972572551), (9, 2312000873), (13, 1600615989), (21, 990857517), (39, 533538663), (63, 330285839), (91, 228659427), (117, 177846221), (273, 76219809), (819, 25406603)]