20781468

素因数分解:

$2^2\times 3^3\times {\mathrm{193}}^1\times {\mathrm{997}}^1$

素因数の和:1203

約数の個数: 48

約数和(自身を含む): 54211360

約数和(自身を除く): 33429892

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 193, 386, 579, 772, 997, 1158, 1737, 1994, 2316, 2991, 3474, 3988, 5211, 5982, 6948, 8973, 10422, 11964, 17946, 20844, 26919, 35892, 53838, 107676, 192421, 384842, 577263, 769684, 1154526, 1731789, 2309052, 3463578, 5195367, 6927156, 10390734, 20781468]

約数ペア:

[(1, 20781468), (2, 10390734), (3, 6927156), (4, 5195367), (6, 3463578), (9, 2309052), (12, 1731789), (18, 1154526), (27, 769684), (36, 577263), (54, 384842), (108, 192421), (193, 107676), (386, 53838), (579, 35892), (772, 26919), (997, 20844), (1158, 17946), (1737, 11964), (1994, 10422), (2316, 8973), (2991, 6948), (3474, 5982), (3988, 5211)]