21082005

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{3187}}^1$

素因数の和:3215

約数の個数: 48

約数和(自身を含む): 43611840

約数和(自身を除く): 22529835

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205, 3187, 6615, 9561, 15935, 22309, 28683, 47805, 66927, 86049, 111545, 143415, 156163, 200781, 334635, 430245, 468489, 602343, 780815, 1003905, 1405467, 2342445, 3011715, 4216401, 7027335, 21082005]

約数ペア:

[(1, 21082005), (3, 7027335), (5, 4216401), (7, 3011715), (9, 2342445), (15, 1405467), (21, 1003905), (27, 780815), (35, 602343), (45, 468489), (49, 430245), (63, 334635), (105, 200781), (135, 156163), (147, 143415), (189, 111545), (245, 86049), (315, 66927), (441, 47805), (735, 28683), (945, 22309), (1323, 15935), (2205, 9561), (3187, 6615)]