A:
Positive:
1 x 63765604111 x 5796873171 x 8981071619 x 1030139781 x 8164611319 x 4834396809 x 9364914509 x 43949
Negative:
-1 x -637656041-11 x -57968731-71 x -8981071-619 x -1030139-781 x -816461-1319 x -483439-6809 x -93649-14509 x -43949
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 637,656,041, 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 | 637,656,041 | |
| -1 | -637,656,041 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 637,656,041.
Example:
1 x 637,656,041 = 637,656,041
and
-1 x -637,656,041 = 637,656,041
Notice both answers equal 637,656,041
With that explanation out of the way, let's continue. Next, we take the number 637,656,041 and divide it by 2:
637,656,041 ÷ 2 = 318,828,020.5
If the quotient is a whole number, then 2 and 318,828,020.5 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 | 637,656,041 | |
| -1 | -637,656,041 |
Now, we try dividing 637,656,041 by 3:
637,656,041 ÷ 3 = 212,552,013.6667
If the quotient is a whole number, then 3 and 212,552,013.6667 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 | 637,656,041 | |
| -1 | -637,656,041 |
Let's try dividing by 4:
637,656,041 ÷ 4 = 159,414,010.25
If the quotient is a whole number, then 4 and 159,414,010.25 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 | 637,656,041 | |
| -1 | 637,656,041 |
If you did it right, you will end up with this table:
| 1 | 11 | 71 | 619 | 781 | 1,319 | 6,809 | 14,509 | 43,949 | 93,649 | 483,439 | 816,461 | 1,030,139 | 8,981,071 | 57,968,731 | 637,656,041 |
| -1 | -11 | -71 | -619 | -781 | -1,319 | -6,809 | -14,509 | -43,949 | -93,649 | -483,439 | -816,461 | -1,030,139 | -8,981,071 | -57,968,731 | -637,656,041 |
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