A:
Positive:
1 x 1310031555 x 2620063143 x 3046585157 x 834415215 x 609317785 x 1668833881 x 337556751 x 19405
Negative:
-1 x -131003155-5 x -26200631-43 x -3046585-157 x -834415-215 x -609317-785 x -166883-3881 x -33755-6751 x -19405
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 131,003,155, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 131,003,155 | |
| -1 | -131,003,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 131,003,155.
Example:
1 x 131,003,155 = 131,003,155
and
-1 x -131,003,155 = 131,003,155
Notice both answers equal 131,003,155
With that explanation out of the way, let's continue. Next, we take the number 131,003,155 and divide it by 2:
131,003,155 ÷ 2 = 65,501,577.5
If the quotient is a whole number, then 2 and 65,501,577.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 131,003,155 | |
| -1 | -131,003,155 |
Now, we try dividing 131,003,155 by 3:
131,003,155 ÷ 3 = 43,667,718.3333
If the quotient is a whole number, then 3 and 43,667,718.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 131,003,155 | |
| -1 | -131,003,155 |
Let's try dividing by 4:
131,003,155 ÷ 4 = 32,750,788.75
If the quotient is a whole number, then 4 and 32,750,788.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 131,003,155 | |
| -1 | 131,003,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 157 | 215 | 785 | 3,881 | 6,751 | 19,405 | 33,755 | 166,883 | 609,317 | 834,415 | 3,046,585 | 26,200,631 | 131,003,155 |
| -1 | -5 | -43 | -157 | -215 | -785 | -3,881 | -6,751 | -19,405 | -33,755 | -166,883 | -609,317 | -834,415 | -3,046,585 | -26,200,631 | -131,003,155 |
Here are some more numbers to try:
Try the factor calculator