20916874

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{17939}}^1$

素因数の和:18005

約数の個数: 16

約数和(自身を含む): 34875360

約数和(自身を除く): 13958486

約数列:

[1, 2, 11, 22, 53, 106, 583, 1166, 17939, 35878, 197329, 394658, 950767, 1901534, 10458437, 20916874]

約数ペア:

[(1, 20916874), (2, 10458437), (11, 1901534), (22, 950767), (53, 394658), (106, 197329), (583, 35878), (1166, 17939)]