20820206

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{311}}^1$

素因数の和:520

約数の個数: 32

約数和(自身を含む): 36391680

約数和(自身を除く): 15571474

約数列:

[1, 2, 11, 17, 22, 34, 179, 187, 311, 358, 374, 622, 1969, 3043, 3421, 3938, 5287, 6086, 6842, 10574, 33473, 55669, 58157, 66946, 111338, 116314, 612359, 946373, 1224718, 1892746, 10410103, 20820206]

約数ペア:

[(1, 20820206), (2, 10410103), (11, 1892746), (17, 1224718), (22, 946373), (34, 612359), (179, 116314), (187, 111338), (311, 66946), (358, 58157), (374, 55669), (622, 33473), (1969, 10574), (3043, 6842), (3421, 6086), (3938, 5287)]