A:
Positive:
1 x 71860855 x 143721719 x 37821567 x 10725595 x 75643335 x 214511129 x 63651273 x 5645
Negative:
-1 x -7186085-5 x -1437217-19 x -378215-67 x -107255-95 x -75643-335 x -21451-1129 x -6365-1273 x -5645
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 7,186,085, 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 | 7,186,085 | |
| -1 | -7,186,085 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,186,085.
Example:
1 x 7,186,085 = 7,186,085
and
-1 x -7,186,085 = 7,186,085
Notice both answers equal 7,186,085
With that explanation out of the way, let's continue. Next, we take the number 7,186,085 and divide it by 2:
7,186,085 ÷ 2 = 3,593,042.5
If the quotient is a whole number, then 2 and 3,593,042.5 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 | 7,186,085 | |
| -1 | -7,186,085 |
Now, we try dividing 7,186,085 by 3:
7,186,085 ÷ 3 = 2,395,361.6667
If the quotient is a whole number, then 3 and 2,395,361.6667 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 | 7,186,085 | |
| -1 | -7,186,085 |
Let's try dividing by 4:
7,186,085 ÷ 4 = 1,796,521.25
If the quotient is a whole number, then 4 and 1,796,521.25 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 | 7,186,085 | |
| -1 | 7,186,085 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 67 | 95 | 335 | 1,129 | 1,273 | 5,645 | 6,365 | 21,451 | 75,643 | 107,255 | 378,215 | 1,437,217 | 7,186,085 |
| -1 | -5 | -19 | -67 | -95 | -335 | -1,129 | -1,273 | -5,645 | -6,365 | -21,451 | -75,643 | -107,255 | -378,215 | -1,437,217 | -7,186,085 |
Here are some more numbers to try:
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