A:
Positive:
1 x 78685397 x 112407753 x 148463127 x 61957167 x 47117371 x 21209889 x 88511169 x 6731
Negative:
-1 x -7868539-7 x -1124077-53 x -148463-127 x -61957-167 x -47117-371 x -21209-889 x -8851-1169 x -6731
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 7,868,539, 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 | 7,868,539 | |
| -1 | -7,868,539 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,868,539.
Example:
1 x 7,868,539 = 7,868,539
and
-1 x -7,868,539 = 7,868,539
Notice both answers equal 7,868,539
With that explanation out of the way, let's continue. Next, we take the number 7,868,539 and divide it by 2:
7,868,539 ÷ 2 = 3,934,269.5
If the quotient is a whole number, then 2 and 3,934,269.5 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 | 7,868,539 | |
| -1 | -7,868,539 |
Now, we try dividing 7,868,539 by 3:
7,868,539 ÷ 3 = 2,622,846.3333
If the quotient is a whole number, then 3 and 2,622,846.3333 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 | 7,868,539 | |
| -1 | -7,868,539 |
Let's try dividing by 4:
7,868,539 ÷ 4 = 1,967,134.75
If the quotient is a whole number, then 4 and 1,967,134.75 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 | 7,868,539 | |
| -1 | 7,868,539 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 127 | 167 | 371 | 889 | 1,169 | 6,731 | 8,851 | 21,209 | 47,117 | 61,957 | 148,463 | 1,124,077 | 7,868,539 |
| -1 | -7 | -53 | -127 | -167 | -371 | -889 | -1,169 | -6,731 | -8,851 | -21,209 | -47,117 | -61,957 | -148,463 | -1,124,077 | -7,868,539 |
Here are some more numbers to try:
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