A:
Positive:
1 x 321231555 x 642463129 x 1107695145 x 221539
Negative:
-1 x -32123155-5 x -6424631-29 x -1107695-145 x -221539
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 32,123,155, 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 | 32,123,155 | |
| -1 | -32,123,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 32,123,155.
Example:
1 x 32,123,155 = 32,123,155
and
-1 x -32,123,155 = 32,123,155
Notice both answers equal 32,123,155
With that explanation out of the way, let's continue. Next, we take the number 32,123,155 and divide it by 2:
32,123,155 ÷ 2 = 16,061,577.5
If the quotient is a whole number, then 2 and 16,061,577.5 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 | 32,123,155 | |
| -1 | -32,123,155 |
Now, we try dividing 32,123,155 by 3:
32,123,155 ÷ 3 = 10,707,718.3333
If the quotient is a whole number, then 3 and 10,707,718.3333 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 | 32,123,155 | |
| -1 | -32,123,155 |
Let's try dividing by 4:
32,123,155 ÷ 4 = 8,030,788.75
If the quotient is a whole number, then 4 and 8,030,788.75 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 | 32,123,155 | |
| -1 | 32,123,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 145 | 221,539 | 1,107,695 | 6,424,631 | 32,123,155 |
| -1 | -5 | -29 | -145 | -221,539 | -1,107,695 | -6,424,631 | -32,123,155 |
Here are some more numbers to try:
Try the factor calculator