81206855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{20849}}^1$

素因数の和:20914

約数の個数: 16

約数和(自身を含む): 105084000

約数和(自身を除く): 23877145

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 20849, 104245, 396131, 854809, 1980655, 4274045, 16241371, 81206855]

約数ペア:

[(1, 81206855), (5, 16241371), (19, 4274045), (41, 1980655), (95, 854809), (205, 396131), (779, 104245), (3895, 20849)]