21130886

素因数分解:

$2^1\times 7^1\times {\mathrm{1109}}^1\times {\mathrm{1361}}^1$

素因数の和:2479

約数の個数: 16

約数和(自身を含む): 36283680

約数和(自身を除く): 15152794

約数列:

[1, 2, 7, 14, 1109, 1361, 2218, 2722, 7763, 9527, 15526, 19054, 1509349, 3018698, 10565443, 21130886]

約数ペア:

[(1, 21130886), (2, 10565443), (7, 3018698), (14, 1509349), (1109, 19054), (1361, 15526), (2218, 9527), (2722, 7763)]