207628239

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{108649}}^1$

素因数の和:108679

約数の個数: 24

約数和(自身を含む): 346810800

約数和(自身を除く): 139182561

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 108649, 325947, 760543, 1412437, 2281629, 4237311, 5323801, 9887059, 15971403, 29661177, 69209413, 207628239]

約数ペア:

[(1, 207628239), (3, 69209413), (7, 29661177), (13, 15971403), (21, 9887059), (39, 5323801), (49, 4237311), (91, 2281629), (147, 1412437), (273, 760543), (637, 325947), (1911, 108649)]