18807687

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{9811}}^1$

素因数の和:9891

約数の個数: 16

約数和(自身を含む): 28258560

約数和(自身を除く): 9450873

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 9811, 29433, 88299, 264897, 696581, 2089743, 6269229, 18807687]

約数ペア:

[(1, 18807687), (3, 6269229), (9, 2089743), (27, 696581), (71, 264897), (213, 88299), (639, 29433), (1917, 9811)]