21400412

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{11311}}^1$

素因数の和:11369

約数の個数: 24

約数和(自身を含む): 41809152

約数和(自身を除く): 20408740

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 11311, 22622, 45244, 124421, 248842, 486373, 497684, 972746, 1945492, 5350103, 10700206, 21400412]

約数ペア:

[(1, 21400412), (2, 10700206), (4, 5350103), (11, 1945492), (22, 972746), (43, 497684), (44, 486373), (86, 248842), (172, 124421), (473, 45244), (946, 22622), (1892, 11311)]