20691484

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42751}}^1$

素因数の和:42777

約数の個数: 18

約数和(自身を含む): 39802112

約数和(自身を除く): 19110628

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42751, 85502, 171004, 470261, 940522, 1881044, 5172871, 10345742, 20691484]

約数ペア:

[(1, 20691484), (2, 10345742), (4, 5172871), (11, 1881044), (22, 940522), (44, 470261), (121, 171004), (242, 85502), (484, 42751)]