A:
Positive:
1 x 3711215455 x 7422430941 x 905174589 x 4169905205 x 1810349445 x 8339813649 x 10170518245 x 20341
Negative:
-1 x -371121545-5 x -74224309-41 x -9051745-89 x -4169905-205 x -1810349-445 x -833981-3649 x -101705-18245 x -20341
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 371,121,545, 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 | 371,121,545 | |
| -1 | -371,121,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 371,121,545.
Example:
1 x 371,121,545 = 371,121,545
and
-1 x -371,121,545 = 371,121,545
Notice both answers equal 371,121,545
With that explanation out of the way, let's continue. Next, we take the number 371,121,545 and divide it by 2:
371,121,545 ÷ 2 = 185,560,772.5
If the quotient is a whole number, then 2 and 185,560,772.5 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 | 371,121,545 | |
| -1 | -371,121,545 |
Now, we try dividing 371,121,545 by 3:
371,121,545 ÷ 3 = 123,707,181.6667
If the quotient is a whole number, then 3 and 123,707,181.6667 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 | 371,121,545 | |
| -1 | -371,121,545 |
Let's try dividing by 4:
371,121,545 ÷ 4 = 92,780,386.25
If the quotient is a whole number, then 4 and 92,780,386.25 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 | 371,121,545 | |
| -1 | 371,121,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 41 | 89 | 205 | 445 | 3,649 | 18,245 | 20,341 | 101,705 | 833,981 | 1,810,349 | 4,169,905 | 9,051,745 | 74,224,309 | 371,121,545 |
| -1 | -5 | -41 | -89 | -205 | -445 | -3,649 | -18,245 | -20,341 | -101,705 | -833,981 | -1,810,349 | -4,169,905 | -9,051,745 | -74,224,309 | -371,121,545 |
Here are some more numbers to try:
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