21957400

素因数分解:

$2^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{1087}}^1$

素因数の和:1204

約数の個数: 48

約数和(自身を含む): 51603840

約数和(自身を除く): 29646440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 404, 505, 808, 1010, 1087, 2020, 2174, 2525, 4040, 4348, 5050, 5435, 8696, 10100, 10870, 20200, 21740, 27175, 43480, 54350, 108700, 109787, 217400, 219574, 439148, 548935, 878296, 1097870, 2195740, 2744675, 4391480, 5489350, 10978700, 21957400]

約数ペア:

[(1, 21957400), (2, 10978700), (4, 5489350), (5, 4391480), (8, 2744675), (10, 2195740), (20, 1097870), (25, 878296), (40, 548935), (50, 439148), (100, 219574), (101, 217400), (200, 109787), (202, 108700), (404, 54350), (505, 43480), (808, 27175), (1010, 21740), (1087, 20200), (2020, 10870), (2174, 10100), (2525, 8696), (4040, 5435), (4348, 5050)]