9989276

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{20639}}^1$

素因数の和:20665

約数の個数: 18

約数和(自身を含む): 19215840

約数和(自身を除く): 9226564

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 20639, 41278, 82556, 227029, 454058, 908116, 2497319, 4994638, 9989276]

約数ペア:

[(1, 9989276), (2, 4994638), (4, 2497319), (11, 908116), (22, 454058), (44, 227029), (121, 82556), (242, 41278), (484, 20639)]