A:
Positive:
1 x 6651362355 x 13302724737 x 1797665541 x 16222835185 x 3595331205 x 32445671517 x 4384557585 x 87691
Negative:
-1 x -665136235-5 x -133027247-37 x -17976655-41 x -16222835-185 x -3595331-205 x -3244567-1517 x -438455-7585 x -87691
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 665,136,235, 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 | 665,136,235 | |
| -1 | -665,136,235 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 665,136,235.
Example:
1 x 665,136,235 = 665,136,235
and
-1 x -665,136,235 = 665,136,235
Notice both answers equal 665,136,235
With that explanation out of the way, let's continue. Next, we take the number 665,136,235 and divide it by 2:
665,136,235 ÷ 2 = 332,568,117.5
If the quotient is a whole number, then 2 and 332,568,117.5 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 | 665,136,235 | |
| -1 | -665,136,235 |
Now, we try dividing 665,136,235 by 3:
665,136,235 ÷ 3 = 221,712,078.3333
If the quotient is a whole number, then 3 and 221,712,078.3333 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 | 665,136,235 | |
| -1 | -665,136,235 |
Let's try dividing by 4:
665,136,235 ÷ 4 = 166,284,058.75
If the quotient is a whole number, then 4 and 166,284,058.75 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 | 665,136,235 | |
| -1 | 665,136,235 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 41 | 185 | 205 | 1,517 | 7,585 | 87,691 | 438,455 | 3,244,567 | 3,595,331 | 16,222,835 | 17,976,655 | 133,027,247 | 665,136,235 |
| -1 | -5 | -37 | -41 | -185 | -205 | -1,517 | -7,585 | -87,691 | -438,455 | -3,244,567 | -3,595,331 | -16,222,835 | -17,976,655 | -133,027,247 | -665,136,235 |
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