397397525

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 620585280

約数和(自身を除く): 223187755

約数列:

[1, 5, 7, 17, 25, 31, 35, 85, 119, 139, 155, 175, 217, 425, 527, 595, 695, 775, 961, 973, 1085, 2363, 2635, 2975, 3475, 3689, 4309, 4805, 4865, 5425, 6727, 11815, 13175, 16337, 16541, 18445, 21545, 24025, 24325, 30163, 33635, 59075, 73253, 81685, 82705, 92225, 107725, 114359, 133579, 150815, 168175, 366265, 408425, 413525, 512771, 571795, 667895, 754075, 935053, 1831325, 2270843, 2563855, 2858975, 3339475, 4675265, 11354215, 12819275, 15895901, 23376325, 56771075, 79479505, 397397525]

約数ペア:

[(1, 397397525), (5, 79479505), (7, 56771075), (17, 23376325), (25, 15895901), (31, 12819275), (35, 11354215), (85, 4675265), (119, 3339475), (139, 2858975), (155, 2563855), (175, 2270843), (217, 1831325), (425, 935053), (527, 754075), (595, 667895), (695, 571795), (775, 512771), (961, 413525), (973, 408425), (1085, 366265), (2363, 168175), (2635, 150815), (2975, 133579), (3475, 114359), (3689, 107725), (4309, 92225), (4805, 82705), (4865, 81685), (5425, 73253), (6727, 59075), (11815, 33635), (13175, 30163), (16337, 24325), (16541, 24025), (18445, 21545)]