A:
Positive:
1 x 6474553155 x 12949106313 x 4980425547 x 1377564565 x 9960851235 x 2755129611 x 10596653055 x 211933
Negative:
-1 x -647455315-5 x -129491063-13 x -49804255-47 x -13775645-65 x -9960851-235 x -2755129-611 x -1059665-3055 x -211933
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 647,455,315, 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 | 647,455,315 | |
| -1 | -647,455,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 647,455,315.
Example:
1 x 647,455,315 = 647,455,315
and
-1 x -647,455,315 = 647,455,315
Notice both answers equal 647,455,315
With that explanation out of the way, let's continue. Next, we take the number 647,455,315 and divide it by 2:
647,455,315 ÷ 2 = 323,727,657.5
If the quotient is a whole number, then 2 and 323,727,657.5 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 | 647,455,315 | |
| -1 | -647,455,315 |
Now, we try dividing 647,455,315 by 3:
647,455,315 ÷ 3 = 215,818,438.3333
If the quotient is a whole number, then 3 and 215,818,438.3333 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 | 647,455,315 | |
| -1 | -647,455,315 |
Let's try dividing by 4:
647,455,315 ÷ 4 = 161,863,828.75
If the quotient is a whole number, then 4 and 161,863,828.75 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 | 647,455,315 | |
| -1 | 647,455,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 47 | 65 | 235 | 611 | 3,055 | 211,933 | 1,059,665 | 2,755,129 | 9,960,851 | 13,775,645 | 49,804,255 | 129,491,063 | 647,455,315 |
| -1 | -5 | -13 | -47 | -65 | -235 | -611 | -3,055 | -211,933 | -1,059,665 | -2,755,129 | -9,960,851 | -13,775,645 | -49,804,255 | -129,491,063 | -647,455,315 |
Here are some more numbers to try:
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