A:
Positive:
1 x 1127000217 x 1610000317 x 662941341 x 2748781119 x 947059287 x 392683697 x 1616934879 x 23099
Negative:
-1 x -112700021-7 x -16100003-17 x -6629413-41 x -2748781-119 x -947059-287 x -392683-697 x -161693-4879 x -23099
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 112,700,021, 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 | 112,700,021 | |
| -1 | -112,700,021 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 112,700,021.
Example:
1 x 112,700,021 = 112,700,021
and
-1 x -112,700,021 = 112,700,021
Notice both answers equal 112,700,021
With that explanation out of the way, let's continue. Next, we take the number 112,700,021 and divide it by 2:
112,700,021 ÷ 2 = 56,350,010.5
If the quotient is a whole number, then 2 and 56,350,010.5 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 | 112,700,021 | |
| -1 | -112,700,021 |
Now, we try dividing 112,700,021 by 3:
112,700,021 ÷ 3 = 37,566,673.6667
If the quotient is a whole number, then 3 and 37,566,673.6667 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 | 112,700,021 | |
| -1 | -112,700,021 |
Let's try dividing by 4:
112,700,021 ÷ 4 = 28,175,005.25
If the quotient is a whole number, then 4 and 28,175,005.25 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 | 112,700,021 | |
| -1 | 112,700,021 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 41 | 119 | 287 | 697 | 4,879 | 23,099 | 161,693 | 392,683 | 947,059 | 2,748,781 | 6,629,413 | 16,100,003 | 112,700,021 |
| -1 | -7 | -17 | -41 | -119 | -287 | -697 | -4,879 | -23,099 | -161,693 | -392,683 | -947,059 | -2,748,781 | -6,629,413 | -16,100,003 | -112,700,021 |
Here are some more numbers to try:
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