21504406

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{449}}^1$

素因数の和:780

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 18930794

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 311, 449, 622, 898, 2177, 3143, 3421, 4354, 4939, 6286, 6842, 9878, 23947, 34573, 47894, 69146, 139639, 279278, 977473, 1536029, 1954946, 3072058, 10752203, 21504406]

約数ペア:

[(1, 21504406), (2, 10752203), (7, 3072058), (11, 1954946), (14, 1536029), (22, 977473), (77, 279278), (154, 139639), (311, 69146), (449, 47894), (622, 34573), (898, 23947), (2177, 9878), (3143, 6842), (3421, 6286), (4354, 4939)]