A:
Positive:
1 x 66406757313 x 51082121107 x 6206239599 x 1108627797 x 8332091391 x 4774037787 x 8527910361 x 64093
Negative:
-1 x -664067573-13 x -51082121-107 x -6206239-599 x -1108627-797 x -833209-1391 x -477403-7787 x -85279-10361 x -64093
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 664,067,573, 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 | 664,067,573 | |
| -1 | -664,067,573 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 664,067,573.
Example:
1 x 664,067,573 = 664,067,573
and
-1 x -664,067,573 = 664,067,573
Notice both answers equal 664,067,573
With that explanation out of the way, let's continue. Next, we take the number 664,067,573 and divide it by 2:
664,067,573 ÷ 2 = 332,033,786.5
If the quotient is a whole number, then 2 and 332,033,786.5 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 | 664,067,573 | |
| -1 | -664,067,573 |
Now, we try dividing 664,067,573 by 3:
664,067,573 ÷ 3 = 221,355,857.6667
If the quotient is a whole number, then 3 and 221,355,857.6667 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 | 664,067,573 | |
| -1 | -664,067,573 |
Let's try dividing by 4:
664,067,573 ÷ 4 = 166,016,893.25
If the quotient is a whole number, then 4 and 166,016,893.25 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 | 664,067,573 | |
| -1 | 664,067,573 |
If you did it right, you will end up with this table:
| 1 | 13 | 107 | 599 | 797 | 1,391 | 7,787 | 10,361 | 64,093 | 85,279 | 477,403 | 833,209 | 1,108,627 | 6,206,239 | 51,082,121 | 664,067,573 |
| -1 | -13 | -107 | -599 | -797 | -1,391 | -7,787 | -10,361 | -64,093 | -85,279 | -477,403 | -833,209 | -1,108,627 | -6,206,239 | -51,082,121 | -664,067,573 |
Here are some more numbers to try:
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