A:
Positive:
1 x 4786566897 x 68379527107 x 4473427149 x 3212461749 x 6390611043 x 4589234289 x 11160115943 x 30023
Negative:
-1 x -478656689-7 x -68379527-107 x -4473427-149 x -3212461-749 x -639061-1043 x -458923-4289 x -111601-15943 x -30023
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 478,656,689, 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 | 478,656,689 | |
| -1 | -478,656,689 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 478,656,689.
Example:
1 x 478,656,689 = 478,656,689
and
-1 x -478,656,689 = 478,656,689
Notice both answers equal 478,656,689
With that explanation out of the way, let's continue. Next, we take the number 478,656,689 and divide it by 2:
478,656,689 ÷ 2 = 239,328,344.5
If the quotient is a whole number, then 2 and 239,328,344.5 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 | 478,656,689 | |
| -1 | -478,656,689 |
Now, we try dividing 478,656,689 by 3:
478,656,689 ÷ 3 = 159,552,229.6667
If the quotient is a whole number, then 3 and 159,552,229.6667 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 | 478,656,689 | |
| -1 | -478,656,689 |
Let's try dividing by 4:
478,656,689 ÷ 4 = 119,664,172.25
If the quotient is a whole number, then 4 and 119,664,172.25 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 | 478,656,689 | |
| -1 | 478,656,689 |
If you did it right, you will end up with this table:
| 1 | 7 | 107 | 149 | 749 | 1,043 | 4,289 | 15,943 | 30,023 | 111,601 | 458,923 | 639,061 | 3,212,461 | 4,473,427 | 68,379,527 | 478,656,689 |
| -1 | -7 | -107 | -149 | -749 | -1,043 | -4,289 | -15,943 | -30,023 | -111,601 | -458,923 | -639,061 | -3,212,461 | -4,473,427 | -68,379,527 | -478,656,689 |
Here are some more numbers to try:
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