A:
Positive:
1 x 6474611055 x 12949222129 x 2232624543 x 15057235145 x 4465249215 x 30114471247 x 5192156235 x 103843
Negative:
-1 x -647461105-5 x -129492221-29 x -22326245-43 x -15057235-145 x -4465249-215 x -3011447-1247 x -519215-6235 x -103843
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 647,461,105, 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 | 647,461,105 | |
| -1 | -647,461,105 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 647,461,105.
Example:
1 x 647,461,105 = 647,461,105
and
-1 x -647,461,105 = 647,461,105
Notice both answers equal 647,461,105
With that explanation out of the way, let's continue. Next, we take the number 647,461,105 and divide it by 2:
647,461,105 ÷ 2 = 323,730,552.5
If the quotient is a whole number, then 2 and 323,730,552.5 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 | 647,461,105 | |
| -1 | -647,461,105 |
Now, we try dividing 647,461,105 by 3:
647,461,105 ÷ 3 = 215,820,368.3333
If the quotient is a whole number, then 3 and 215,820,368.3333 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 | 647,461,105 | |
| -1 | -647,461,105 |
Let's try dividing by 4:
647,461,105 ÷ 4 = 161,865,276.25
If the quotient is a whole number, then 4 and 161,865,276.25 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 | 647,461,105 | |
| -1 | 647,461,105 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 43 | 145 | 215 | 1,247 | 6,235 | 103,843 | 519,215 | 3,011,447 | 4,465,249 | 15,057,235 | 22,326,245 | 129,492,221 | 647,461,105 |
| -1 | -5 | -29 | -43 | -145 | -215 | -1,247 | -6,235 | -103,843 | -519,215 | -3,011,447 | -4,465,249 | -15,057,235 | -22,326,245 | -129,492,221 | -647,461,105 |
Here are some more numbers to try:
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