81990629

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{7129}}^1$

素因数の和:7220

約数の個数: 16

約数和(自身を含む): 98565120

約数和(自身を除く): 16574491

約数列:

[1, 7, 31, 53, 217, 371, 1643, 7129, 11501, 49903, 220999, 377837, 1546993, 2644859, 11712947, 81990629]

約数ペア:

[(1, 81990629), (7, 11712947), (31, 2644859), (53, 1546993), (217, 377837), (371, 220999), (1643, 49903), (7129, 11501)]