19900996821

素因数分解:

$3^2\times {\mathrm{139}}^1\times {\mathrm{401}}^1\times {\mathrm{39671}}^1$

素因数の和:40217

約数の個数: 24

約数和(自身を含む): 29025622080

約数和(自身を除く): 9124625259

約数列:

[1, 3, 9, 139, 401, 417, 1203, 1251, 3609, 39671, 55739, 119013, 167217, 357039, 501651, 5514269, 15908071, 16542807, 47724213, 49628421, 143172639, 2211221869, 6633665607, 19900996821]

約数ペア:

[(1, 19900996821), (3, 6633665607), (9, 2211221869), (139, 143172639), (401, 49628421), (417, 47724213), (1203, 16542807), (1251, 15908071), (3609, 5514269), (39671, 501651), (55739, 357039), (119013, 167217)]