21091906

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{7549}}^1$

素因数の和:7689

約数の個数: 16

約数和(自身を含む): 34790400

約数和(自身を除く): 13698494

約数列:

[1, 2, 11, 22, 127, 254, 1397, 2794, 7549, 15098, 83039, 166078, 958723, 1917446, 10545953, 21091906]

約数ペア:

[(1, 21091906), (2, 10545953), (11, 1917446), (22, 958723), (127, 166078), (254, 83039), (1397, 15098), (2794, 7549)]