A:
Positive:
1 x 66406575119 x 3495082929 x 2289881937 x 17947723551 x 1205201703 x 9446171073 x 61888720387 x 32573
Negative:
-1 x -664065751-19 x -34950829-29 x -22898819-37 x -17947723-551 x -1205201-703 x -944617-1073 x -618887-20387 x -32573
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 664,065,751, 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 | 664,065,751 | |
| -1 | -664,065,751 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 664,065,751.
Example:
1 x 664,065,751 = 664,065,751
and
-1 x -664,065,751 = 664,065,751
Notice both answers equal 664,065,751
With that explanation out of the way, let's continue. Next, we take the number 664,065,751 and divide it by 2:
664,065,751 ÷ 2 = 332,032,875.5
If the quotient is a whole number, then 2 and 332,032,875.5 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 | 664,065,751 | |
| -1 | -664,065,751 |
Now, we try dividing 664,065,751 by 3:
664,065,751 ÷ 3 = 221,355,250.3333
If the quotient is a whole number, then 3 and 221,355,250.3333 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 | 664,065,751 | |
| -1 | -664,065,751 |
Let's try dividing by 4:
664,065,751 ÷ 4 = 166,016,437.75
If the quotient is a whole number, then 4 and 166,016,437.75 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 | 664,065,751 | |
| -1 | 664,065,751 |
If you did it right, you will end up with this table:
| 1 | 19 | 29 | 37 | 551 | 703 | 1,073 | 20,387 | 32,573 | 618,887 | 944,617 | 1,205,201 | 17,947,723 | 22,898,819 | 34,950,829 | 664,065,751 |
| -1 | -19 | -29 | -37 | -551 | -703 | -1,073 | -20,387 | -32,573 | -618,887 | -944,617 | -1,205,201 | -17,947,723 | -22,898,819 | -34,950,829 | -664,065,751 |
Here are some more numbers to try:
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