19124780

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4001}}^1$

素因数の和:4249

約数の個数: 24

約数和(自身を含む): 40340160

約数和(自身を除く): 21215380

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4001, 4780, 8002, 16004, 20005, 40010, 80020, 956239, 1912478, 3824956, 4781195, 9562390, 19124780]

約数ペア:

[(1, 19124780), (2, 9562390), (4, 4781195), (5, 3824956), (10, 1912478), (20, 956239), (239, 80020), (478, 40010), (956, 20005), (1195, 16004), (2390, 8002), (4001, 4780)]