A:
Positive:
1 x 6641354455 x 132827089269 x 2468905347 x 19139351345 x 4937811423 x 4667151735 x 3827877115 x 93343
Negative:
-1 x -664135445-5 x -132827089-269 x -2468905-347 x -1913935-1345 x -493781-1423 x -466715-1735 x -382787-7115 x -93343
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 664,135,445, 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 | 664,135,445 | |
| -1 | -664,135,445 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 664,135,445.
Example:
1 x 664,135,445 = 664,135,445
and
-1 x -664,135,445 = 664,135,445
Notice both answers equal 664,135,445
With that explanation out of the way, let's continue. Next, we take the number 664,135,445 and divide it by 2:
664,135,445 ÷ 2 = 332,067,722.5
If the quotient is a whole number, then 2 and 332,067,722.5 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 | 664,135,445 | |
| -1 | -664,135,445 |
Now, we try dividing 664,135,445 by 3:
664,135,445 ÷ 3 = 221,378,481.6667
If the quotient is a whole number, then 3 and 221,378,481.6667 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 | 664,135,445 | |
| -1 | -664,135,445 |
Let's try dividing by 4:
664,135,445 ÷ 4 = 166,033,861.25
If the quotient is a whole number, then 4 and 166,033,861.25 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 | 664,135,445 | |
| -1 | 664,135,445 |
If you did it right, you will end up with this table:
| 1 | 5 | 269 | 347 | 1,345 | 1,423 | 1,735 | 7,115 | 93,343 | 382,787 | 466,715 | 493,781 | 1,913,935 | 2,468,905 | 132,827,089 | 664,135,445 |
| -1 | -5 | -269 | -347 | -1,345 | -1,423 | -1,735 | -7,115 | -93,343 | -382,787 | -466,715 | -493,781 | -1,913,935 | -2,468,905 | -132,827,089 | -664,135,445 |
Here are some more numbers to try:
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