A:
Positive:
1 x 71583897 x 102262729 x 246841179 x 39991197 x 36337203 x 352631253 x 57131379 x 5191
Negative:
-1 x -7158389-7 x -1022627-29 x -246841-179 x -39991-197 x -36337-203 x -35263-1253 x -5713-1379 x -5191
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 7,158,389, 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 | 7,158,389 | |
| -1 | -7,158,389 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,158,389.
Example:
1 x 7,158,389 = 7,158,389
and
-1 x -7,158,389 = 7,158,389
Notice both answers equal 7,158,389
With that explanation out of the way, let's continue. Next, we take the number 7,158,389 and divide it by 2:
7,158,389 ÷ 2 = 3,579,194.5
If the quotient is a whole number, then 2 and 3,579,194.5 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 | 7,158,389 | |
| -1 | -7,158,389 |
Now, we try dividing 7,158,389 by 3:
7,158,389 ÷ 3 = 2,386,129.6667
If the quotient is a whole number, then 3 and 2,386,129.6667 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 | 7,158,389 | |
| -1 | -7,158,389 |
Let's try dividing by 4:
7,158,389 ÷ 4 = 1,789,597.25
If the quotient is a whole number, then 4 and 1,789,597.25 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 | 7,158,389 | |
| -1 | 7,158,389 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 179 | 197 | 203 | 1,253 | 1,379 | 5,191 | 5,713 | 35,263 | 36,337 | 39,991 | 246,841 | 1,022,627 | 7,158,389 |
| -1 | -7 | -29 | -179 | -197 | -203 | -1,253 | -1,379 | -5,191 | -5,713 | -35,263 | -36,337 | -39,991 | -246,841 | -1,022,627 | -7,158,389 |
Here are some more numbers to try:
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