21115212

素因数分解:

$2^2\times 3^1\times {\mathrm{139}}^1\times {\mathrm{12659}}^1$

素因数の和:12805

約数の個数: 24

約数和(自身を含む): 49627200

約数和(自身を除く): 28511988

約数列:

[1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668, 12659, 25318, 37977, 50636, 75954, 151908, 1759601, 3519202, 5278803, 7038404, 10557606, 21115212]

約数ペア:

[(1, 21115212), (2, 10557606), (3, 7038404), (4, 5278803), (6, 3519202), (12, 1759601), (139, 151908), (278, 75954), (417, 50636), (556, 37977), (834, 25318), (1668, 12659)]