21704210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197311}}^1$

素因数の和:197329

約数の個数: 16

約数和(自身を含む): 42619392

約数和(自身を除く): 20915182

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197311, 394622, 986555, 1973110, 2170421, 4340842, 10852105, 21704210]

約数ペア:

[(1, 21704210), (2, 10852105), (5, 4340842), (10, 2170421), (11, 1973110), (22, 986555), (55, 394622), (110, 197311)]