11993391

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{137}}^2$

素因数の和:351

約数の個数: 18

約数和(自身を含む): 17696952

約数和(自身を除く): 5703561

約数列:

[1, 3, 9, 71, 137, 213, 411, 639, 1233, 9727, 18769, 29181, 56307, 87543, 168921, 1332599, 3997797, 11993391]

約数ペア:

[(1, 11993391), (3, 3997797), (9, 1332599), (71, 168921), (137, 87543), (213, 56307), (411, 29181), (639, 18769), (1233, 9727)]