21517335

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{823}}^1$

素因数の和:924

約数の個数: 48

約数和(自身を含む): 43190784

約数和(自身を除く): 21673449

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 83, 105, 249, 315, 415, 581, 747, 823, 1245, 1743, 2469, 2905, 3735, 4115, 5229, 5761, 7407, 8715, 12345, 17283, 26145, 28805, 37035, 51849, 68309, 86415, 204927, 259245, 341545, 478163, 614781, 1024635, 1434489, 2390815, 3073905, 4303467, 7172445, 21517335]

約数ペア:

[(1, 21517335), (3, 7172445), (5, 4303467), (7, 3073905), (9, 2390815), (15, 1434489), (21, 1024635), (35, 614781), (45, 478163), (63, 341545), (83, 259245), (105, 204927), (249, 86415), (315, 68309), (415, 51849), (581, 37035), (747, 28805), (823, 26145), (1245, 17283), (1743, 12345), (2469, 8715), (2905, 7407), (3735, 5761), (4115, 5229)]