21039788

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68311}}^1$

素因数の和:68333

約数の個数: 24

約数和(自身を含む): 45905664

約数和(自身を除く): 24865876

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68311, 136622, 273244, 478177, 751421, 956354, 1502842, 1912708, 3005684, 5259947, 10519894, 21039788]

約数ペア:

[(1, 21039788), (2, 10519894), (4, 5259947), (7, 3005684), (11, 1912708), (14, 1502842), (22, 956354), (28, 751421), (44, 478177), (77, 273244), (154, 136622), (308, 68311)]