21380628

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{337}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 53149824

約数和(自身を除く): 31769196

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 311, 337, 622, 674, 933, 1011, 1244, 1348, 1866, 2022, 3732, 4044, 5287, 5729, 10574, 11458, 15861, 17187, 21148, 22916, 31722, 34374, 63444, 68748, 104807, 209614, 314421, 419228, 628842, 1257684, 1781719, 3563438, 5345157, 7126876, 10690314, 21380628]

約数ペア:

[(1, 21380628), (2, 10690314), (3, 7126876), (4, 5345157), (6, 3563438), (12, 1781719), (17, 1257684), (34, 628842), (51, 419228), (68, 314421), (102, 209614), (204, 104807), (311, 68748), (337, 63444), (622, 34374), (674, 31722), (933, 22916), (1011, 21148), (1244, 17187), (1348, 15861), (1866, 11458), (2022, 10574), (3732, 5729), (4044, 5287)]