261664052

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{387077}}^1$

素因数の和:387107

約数の個数: 18

約数和(自身を含む): 495846918

約数和(自身を除く): 234182866

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 387077, 774154, 1548308, 5032001, 10064002, 20128004, 65416013, 130832026, 261664052]

約数ペア:

[(1, 261664052), (2, 130832026), (4, 65416013), (13, 20128004), (26, 10064002), (52, 5032001), (169, 1548308), (338, 774154), (676, 387077)]