31690480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20849}}^1$

素因数の和:20881

約数の個数: 40

約数和(自身を含む): 77562000

約数和(自身を除く): 45871520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 20849, 41698, 83396, 104245, 166792, 208490, 333584, 396131, 416980, 792262, 833960, 1584524, 1667920, 1980655, 3169048, 3961310, 6338096, 7922620, 15845240, 31690480]

約数ペア:

[(1, 31690480), (2, 15845240), (4, 7922620), (5, 6338096), (8, 3961310), (10, 3169048), (16, 1980655), (19, 1667920), (20, 1584524), (38, 833960), (40, 792262), (76, 416980), (80, 396131), (95, 333584), (152, 208490), (190, 166792), (304, 104245), (380, 83396), (760, 41698), (1520, 20849)]