71278781

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{487}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 86785920

約数和(自身を除く): 15507139

約数列:

[1, 7, 29, 49, 103, 203, 487, 721, 1421, 2987, 3409, 5047, 14123, 20909, 23863, 50161, 98861, 146363, 351127, 692027, 1454669, 2457889, 10182683, 71278781]

約数ペア:

[(1, 71278781), (7, 10182683), (29, 2457889), (49, 1454669), (103, 692027), (203, 351127), (487, 146363), (721, 98861), (1421, 50161), (2987, 23863), (3409, 20909), (5047, 14123)]