21663495

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{709}}^1$

素因数の和:824

約数の個数: 48

約数和(自身を含む): 43417920

約数和(自身を除く): 21754425

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 97, 105, 291, 315, 485, 679, 709, 873, 1455, 2037, 2127, 3395, 3545, 4365, 4963, 6111, 6381, 10185, 10635, 14889, 24815, 30555, 31905, 44667, 68773, 74445, 206319, 223335, 343865, 481411, 618957, 1031595, 1444233, 2407055, 3094785, 4332699, 7221165, 21663495]

約数ペア:

[(1, 21663495), (3, 7221165), (5, 4332699), (7, 3094785), (9, 2407055), (15, 1444233), (21, 1031595), (35, 618957), (45, 481411), (63, 343865), (97, 223335), (105, 206319), (291, 74445), (315, 68773), (485, 44667), (679, 31905), (709, 30555), (873, 24815), (1455, 14889), (2037, 10635), (2127, 10185), (3395, 6381), (3545, 6111), (4365, 4963)]