21397684

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{69473}}^1$

素因数の和:69495

約数の個数: 24

約数和(自身を含む): 46686528

約数和(自身を除く): 25288844

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 69473, 138946, 277892, 486311, 764203, 972622, 1528406, 1945244, 3056812, 5349421, 10698842, 21397684]

約数ペア:

[(1, 21397684), (2, 10698842), (4, 5349421), (7, 3056812), (11, 1945244), (14, 1528406), (22, 972622), (28, 764203), (44, 486311), (77, 277892), (154, 138946), (308, 69473)]