20972842

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{17987}}^1$

素因数の和:18053

約数の個数: 16

約数和(自身を含む): 34968672

約数和(自身を除く): 13995830

約数列:

[1, 2, 11, 22, 53, 106, 583, 1166, 17987, 35974, 197857, 395714, 953311, 1906622, 10486421, 20972842]

約数ペア:

[(1, 20972842), (2, 10486421), (11, 1906622), (22, 953311), (53, 395714), (106, 197857), (583, 35974), (1166, 17987)]