21126116

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43649}}^1$

素因数の和:43675

約数の個数: 18

約数和(自身を含む): 40638150

約数和(自身を除く): 19512034

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43649, 87298, 174596, 480139, 960278, 1920556, 5281529, 10563058, 21126116]

約数ペア:

[(1, 21126116), (2, 10563058), (4, 5281529), (11, 1920556), (22, 960278), (44, 480139), (121, 174596), (242, 87298), (484, 43649)]