21059973

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3083}}^1$

素因数の和:3126

約数の個数: 32

約数和(自身を含む): 35527680

約数和(自身を除く): 14467707

約数列:

[1, 3, 9, 11, 23, 27, 33, 69, 99, 207, 253, 297, 621, 759, 2277, 3083, 6831, 9249, 27747, 33913, 70909, 83241, 101739, 212727, 305217, 638181, 779999, 915651, 1914543, 2339997, 7019991, 21059973]

約数ペア:

[(1, 21059973), (3, 7019991), (9, 2339997), (11, 1914543), (23, 915651), (27, 779999), (33, 638181), (69, 305217), (99, 212727), (207, 101739), (253, 83241), (297, 70909), (621, 33913), (759, 27747), (2277, 9249), (3083, 6831)]