198596980

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{15443}}^1$

素因数の和:16095

約数の個数: 24

約数和(自身を含む): 417729312

約数和(自身を除く): 219132332

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2572, 3215, 6430, 12860, 15443, 30886, 61772, 77215, 154430, 308860, 9929849, 19859698, 39719396, 49649245, 99298490, 198596980]

約数ペア:

[(1, 198596980), (2, 99298490), (4, 49649245), (5, 39719396), (10, 19859698), (20, 9929849), (643, 308860), (1286, 154430), (2572, 77215), (3215, 61772), (6430, 30886), (12860, 15443)]