19997165

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{1279}}^1$

素因数の和:1396

約数の個数: 16

約数和(自身を含む): 24883200

約数和(自身を除く): 4886035

約数列:

[1, 5, 53, 59, 265, 295, 1279, 3127, 6395, 15635, 67787, 75461, 338935, 377305, 3999433, 19997165]

約数ペア:

[(1, 19997165), (5, 3999433), (53, 377305), (59, 338935), (265, 75461), (295, 67787), (1279, 15635), (3127, 6395)]