Answer:
Her password is 1048222131. 
Like Angie said, 1048 * 2* 2 * 2 * 131. 
But before that you need to decompose 1048 into its prime factors.
 
The Prime Factorization is: 
2 x 2 x 2 x 131 
 
In Exponential Form: 
23 x 1311 
 
CSV Format: 
2, 2, 2, 131 
 
All Factors of 1048: 
1, 2, 4, 8, 131, 262, 524, 1048 
 
Prime Factors Tree 
 1048 
 / \ 
2 524 
 / \ 
 2 262 
 / \ 
 2 131
There you go! If you need more help just reach out to me!