A:
Positive:
1 x 491779123 x 21381729 x 16957973 x 67367101 x 48691667 x 73731679 x 29292117 x 2323
Negative:
-1 x -4917791-23 x -213817-29 x -169579-73 x -67367-101 x -48691-667 x -7373-1679 x -2929-2117 x -2323
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 4,917,791, 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 | 4,917,791 | |
| -1 | -4,917,791 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 4,917,791.
Example:
1 x 4,917,791 = 4,917,791
and
-1 x -4,917,791 = 4,917,791
Notice both answers equal 4,917,791
With that explanation out of the way, let's continue. Next, we take the number 4,917,791 and divide it by 2:
4,917,791 ÷ 2 = 2,458,895.5
If the quotient is a whole number, then 2 and 2,458,895.5 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 | 4,917,791 | |
| -1 | -4,917,791 |
Now, we try dividing 4,917,791 by 3:
4,917,791 ÷ 3 = 1,639,263.6667
If the quotient is a whole number, then 3 and 1,639,263.6667 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 | 4,917,791 | |
| -1 | -4,917,791 |
Let's try dividing by 4:
4,917,791 ÷ 4 = 1,229,447.75
If the quotient is a whole number, then 4 and 1,229,447.75 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 | 4,917,791 | |
| -1 | 4,917,791 |
If you did it right, you will end up with this table:
| 1 | 23 | 29 | 73 | 101 | 667 | 1,679 | 2,117 | 2,323 | 2,929 | 7,373 | 48,691 | 67,367 | 169,579 | 213,817 | 4,917,791 |
| -1 | -23 | -29 | -73 | -101 | -667 | -1,679 | -2,117 | -2,323 | -2,929 | -7,373 | -48,691 | -67,367 | -169,579 | -213,817 | -4,917,791 |
Here are some more numbers to try:
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