12725020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8263}}^1$

素因数の和:8290

約数の個数: 48

約数和(自身を含む): 33320448

約数和(自身を除く): 20595428

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 8263, 16526, 33052, 41315, 57841, 82630, 90893, 115682, 165260, 181786, 231364, 289205, 363572, 454465, 578410, 636251, 908930, 1156820, 1272502, 1817860, 2545004, 3181255, 6362510, 12725020]

約数ペア:

[(1, 12725020), (2, 6362510), (4, 3181255), (5, 2545004), (7, 1817860), (10, 1272502), (11, 1156820), (14, 908930), (20, 636251), (22, 578410), (28, 454465), (35, 363572), (44, 289205), (55, 231364), (70, 181786), (77, 165260), (110, 115682), (140, 90893), (154, 82630), (220, 57841), (308, 41315), (385, 33052), (770, 16526), (1540, 8263)]