A:
Positive:
1 x 97789117 x 5752323 x 4251741 x 2385161 x 16031391 x 2501697 x 1403943 x 1037
Negative:
-1 x -977891-17 x -57523-23 x -42517-41 x -23851-61 x -16031-391 x -2501-697 x -1403-943 x -1037
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 977,891, 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 | 977,891 | |
| -1 | -977,891 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 977,891.
Example:
1 x 977,891 = 977,891
and
-1 x -977,891 = 977,891
Notice both answers equal 977,891
With that explanation out of the way, let's continue. Next, we take the number 977,891 and divide it by 2:
977,891 ÷ 2 = 488,945.5
If the quotient is a whole number, then 2 and 488,945.5 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 | 977,891 | |
| -1 | -977,891 |
Now, we try dividing 977,891 by 3:
977,891 ÷ 3 = 325,963.6667
If the quotient is a whole number, then 3 and 325,963.6667 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 | 977,891 | |
| -1 | -977,891 |
Let's try dividing by 4:
977,891 ÷ 4 = 244,472.75
If the quotient is a whole number, then 4 and 244,472.75 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 | 977,891 | |
| -1 | 977,891 |
If you did it right, you will end up with this table:
| 1 | 17 | 23 | 41 | 61 | 391 | 697 | 943 | 1,037 | 1,403 | 2,501 | 16,031 | 23,851 | 42,517 | 57,523 | 977,891 |
| -1 | -17 | -23 | -41 | -61 | -391 | -697 | -943 | -1,037 | -1,403 | -2,501 | -16,031 | -23,851 | -42,517 | -57,523 | -977,891 |
Here are some more numbers to try:
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