A:
Positive:
1 x 714073113 x 54928717 x 42004379 x 90389221 x 32311409 x 174591027 x 69531343 x 5317
Negative:
-1 x -7140731-13 x -549287-17 x -420043-79 x -90389-221 x -32311-409 x -17459-1027 x -6953-1343 x -5317
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 7,140,731, 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 | 7,140,731 | |
| -1 | -7,140,731 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,140,731.
Example:
1 x 7,140,731 = 7,140,731
and
-1 x -7,140,731 = 7,140,731
Notice both answers equal 7,140,731
With that explanation out of the way, let's continue. Next, we take the number 7,140,731 and divide it by 2:
7,140,731 ÷ 2 = 3,570,365.5
If the quotient is a whole number, then 2 and 3,570,365.5 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 | 7,140,731 | |
| -1 | -7,140,731 |
Now, we try dividing 7,140,731 by 3:
7,140,731 ÷ 3 = 2,380,243.6667
If the quotient is a whole number, then 3 and 2,380,243.6667 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 | 7,140,731 | |
| -1 | -7,140,731 |
Let's try dividing by 4:
7,140,731 ÷ 4 = 1,785,182.75
If the quotient is a whole number, then 4 and 1,785,182.75 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 | 7,140,731 | |
| -1 | 7,140,731 |
If you did it right, you will end up with this table:
| 1 | 13 | 17 | 79 | 221 | 409 | 1,027 | 1,343 | 5,317 | 6,953 | 17,459 | 32,311 | 90,389 | 420,043 | 549,287 | 7,140,731 |
| -1 | -13 | -17 | -79 | -221 | -409 | -1,027 | -1,343 | -5,317 | -6,953 | -17,459 | -32,311 | -90,389 | -420,043 | -549,287 | -7,140,731 |
Here are some more numbers to try:
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