A:
Positive:
1 x 6476440677 x 9252058147 x 13779661329 x 19685231051 x 6162171873 x 3457797357 x 8803113111 x 49397
Negative:
-1 x -647644067-7 x -92520581-47 x -13779661-329 x -1968523-1051 x -616217-1873 x -345779-7357 x -88031-13111 x -49397
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 647,644,067, 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 | 647,644,067 | |
| -1 | -647,644,067 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 647,644,067.
Example:
1 x 647,644,067 = 647,644,067
and
-1 x -647,644,067 = 647,644,067
Notice both answers equal 647,644,067
With that explanation out of the way, let's continue. Next, we take the number 647,644,067 and divide it by 2:
647,644,067 ÷ 2 = 323,822,033.5
If the quotient is a whole number, then 2 and 323,822,033.5 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 | 647,644,067 | |
| -1 | -647,644,067 |
Now, we try dividing 647,644,067 by 3:
647,644,067 ÷ 3 = 215,881,355.6667
If the quotient is a whole number, then 3 and 215,881,355.6667 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 | 647,644,067 | |
| -1 | -647,644,067 |
Let's try dividing by 4:
647,644,067 ÷ 4 = 161,911,016.75
If the quotient is a whole number, then 4 and 161,911,016.75 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 | 647,644,067 | |
| -1 | 647,644,067 |
If you did it right, you will end up with this table:
| 1 | 7 | 47 | 329 | 1,051 | 1,873 | 7,357 | 13,111 | 49,397 | 88,031 | 345,779 | 616,217 | 1,968,523 | 13,779,661 | 92,520,581 | 647,644,067 |
| -1 | -7 | -47 | -329 | -1,051 | -1,873 | -7,357 | -13,111 | -49,397 | -88,031 | -345,779 | -616,217 | -1,968,523 | -13,779,661 | -92,520,581 | -647,644,067 |
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