A:
Positive:
1 x 40311564711 x 3664687719 x 21216613209 x 1928783373 x 10807394103 x 982495171 x 779577087 x 56881
Negative:
-1 x -403115647-11 x -36646877-19 x -21216613-209 x -1928783-373 x -1080739-4103 x -98249-5171 x -77957-7087 x -56881
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 403,115,647, 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 | 403,115,647 | |
| -1 | -403,115,647 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 403,115,647.
Example:
1 x 403,115,647 = 403,115,647
and
-1 x -403,115,647 = 403,115,647
Notice both answers equal 403,115,647
With that explanation out of the way, let's continue. Next, we take the number 403,115,647 and divide it by 2:
403,115,647 ÷ 2 = 201,557,823.5
If the quotient is a whole number, then 2 and 201,557,823.5 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 | 403,115,647 | |
| -1 | -403,115,647 |
Now, we try dividing 403,115,647 by 3:
403,115,647 ÷ 3 = 134,371,882.3333
If the quotient is a whole number, then 3 and 134,371,882.3333 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 | 403,115,647 | |
| -1 | -403,115,647 |
Let's try dividing by 4:
403,115,647 ÷ 4 = 100,778,911.75
If the quotient is a whole number, then 4 and 100,778,911.75 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 | 403,115,647 | |
| -1 | 403,115,647 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 209 | 373 | 4,103 | 5,171 | 7,087 | 56,881 | 77,957 | 98,249 | 1,080,739 | 1,928,783 | 21,216,613 | 36,646,877 | 403,115,647 |
| -1 | -11 | -19 | -209 | -373 | -4,103 | -5,171 | -7,087 | -56,881 | -77,957 | -98,249 | -1,080,739 | -1,928,783 | -21,216,613 | -36,646,877 | -403,115,647 |
Here are some more numbers to try:
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