208557181

素因数分解:

$7^2\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:222

約数の個数: 36

約数和(自身を含む): 259006176

約数和(自身を除く): 50448995

約数列:

[1, 7, 31, 43, 49, 103, 217, 301, 721, 961, 1333, 1519, 2107, 3193, 4429, 5047, 6727, 9331, 22351, 31003, 41323, 47089, 65317, 98983, 137299, 156457, 217021, 289261, 692881, 961093, 2024827, 4256269, 4850167, 6727651, 29793883, 208557181]

約数ペア:

[(1, 208557181), (7, 29793883), (31, 6727651), (43, 4850167), (49, 4256269), (103, 2024827), (217, 961093), (301, 692881), (721, 289261), (961, 217021), (1333, 156457), (1519, 137299), (2107, 98983), (3193, 65317), (4429, 47089), (5047, 41323), (6727, 31003), (9331, 22351)]