21108786

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{81817}}^1$

素因数の和:81865

約数の個数: 16

約数和(自身を含む): 43199904

約数和(自身を除く): 22091118

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 81817, 163634, 245451, 490902, 3518131, 7036262, 10554393, 21108786]

約数ペア:

[(1, 21108786), (2, 10554393), (3, 7036262), (6, 3518131), (43, 490902), (86, 245451), (129, 163634), (258, 81817)]