A:
Positive:
1 x 6663665455 x 13327330913 x 5125896531 x 2149569565 x 10251793155 x 4299139403 x 16535152015 x 330703
Negative:
-1 x -666366545-5 x -133273309-13 x -51258965-31 x -21495695-65 x -10251793-155 x -4299139-403 x -1653515-2015 x -330703
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 666,366,545, 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 | 666,366,545 | |
| -1 | -666,366,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 666,366,545.
Example:
1 x 666,366,545 = 666,366,545
and
-1 x -666,366,545 = 666,366,545
Notice both answers equal 666,366,545
With that explanation out of the way, let's continue. Next, we take the number 666,366,545 and divide it by 2:
666,366,545 ÷ 2 = 333,183,272.5
If the quotient is a whole number, then 2 and 333,183,272.5 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 | 666,366,545 | |
| -1 | -666,366,545 |
Now, we try dividing 666,366,545 by 3:
666,366,545 ÷ 3 = 222,122,181.6667
If the quotient is a whole number, then 3 and 222,122,181.6667 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 | 666,366,545 | |
| -1 | -666,366,545 |
Let's try dividing by 4:
666,366,545 ÷ 4 = 166,591,636.25
If the quotient is a whole number, then 4 and 166,591,636.25 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 | 666,366,545 | |
| -1 | 666,366,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 31 | 65 | 155 | 403 | 2,015 | 330,703 | 1,653,515 | 4,299,139 | 10,251,793 | 21,495,695 | 51,258,965 | 133,273,309 | 666,366,545 |
| -1 | -5 | -13 | -31 | -65 | -155 | -403 | -2,015 | -330,703 | -1,653,515 | -4,299,139 | -10,251,793 | -21,495,695 | -51,258,965 | -133,273,309 | -666,366,545 |
Here are some more numbers to try:
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