19216521

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{1811}}^1$

素因数の和:1954

約数の個数: 20

約数和(自身を含む): 28941264

約数和(自身を除く): 9724743

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 1811, 3537, 5433, 10611, 16299, 48897, 146691, 237241, 711723, 2135169, 6405507, 19216521]

約数ペア:

[(1, 19216521), (3, 6405507), (9, 2135169), (27, 711723), (81, 237241), (131, 146691), (393, 48897), (1179, 16299), (1811, 10611), (3537, 5433)]