Respuesta :

[tex]1881|3\\.\ 627|3\\.\ 209|11\\.\ \ 19|19\\.\ \ \ 1|\\\\1881=3\times3\times11\times19\\\\Your\ answer:\boxed{3;\ 3\times3=9}[/tex]
since 1881 is an odd number, dividing it by an even number will leave you with a remainder, so 2, 4, and 6 are automatically excluded

1881/3 = 627
1881/9 = 209

so both 3 and 9 are factors