205689211

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{283}}^1$

素因数の和:480

約数の個数: 32

約数和(自身を含む): 260825600

約数和(自身を除く): 55136389

約数列:

[1, 7, 13, 49, 91, 163, 283, 343, 637, 1141, 1981, 2119, 3679, 4459, 7987, 13867, 14833, 25753, 46129, 55909, 97069, 103831, 180271, 322903, 599677, 726817, 1261897, 2260321, 4197739, 15822247, 29384173, 205689211]

約数ペア:

[(1, 205689211), (7, 29384173), (13, 15822247), (49, 4197739), (91, 2260321), (163, 1261897), (283, 726817), (343, 599677), (637, 322903), (1141, 180271), (1981, 103831), (2119, 97069), (3679, 55909), (4459, 46129), (7987, 25753), (13867, 14833)]