257304991

素因数分解:

${\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{67}}^2$

素因数の和:251

約数の個数: 18

約数和(自身を含む): 276044832

約数和(自身を除く): 18739841

約数列:

[1, 31, 43, 67, 1333, 1849, 2077, 2881, 4489, 57319, 89311, 123883, 139159, 193027, 3840373, 5983837, 8300161, 257304991]

約数ペア:

[(1, 257304991), (31, 8300161), (43, 5983837), (67, 3840373), (1333, 193027), (1849, 139159), (2077, 123883), (2881, 89311), (4489, 57319)]