A:
Positive:
1 x 78521455 x 15704297 x 112173531 x 25329535 x 224347155 x 50659217 x 361851085 x 7237
Negative:
-1 x -7852145-5 x -1570429-7 x -1121735-31 x -253295-35 x -224347-155 x -50659-217 x -36185-1085 x -7237
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 7,852,145, 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 | 7,852,145 | |
| -1 | -7,852,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,852,145.
Example:
1 x 7,852,145 = 7,852,145
and
-1 x -7,852,145 = 7,852,145
Notice both answers equal 7,852,145
With that explanation out of the way, let's continue. Next, we take the number 7,852,145 and divide it by 2:
7,852,145 ÷ 2 = 3,926,072.5
If the quotient is a whole number, then 2 and 3,926,072.5 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 | 7,852,145 | |
| -1 | -7,852,145 |
Now, we try dividing 7,852,145 by 3:
7,852,145 ÷ 3 = 2,617,381.6667
If the quotient is a whole number, then 3 and 2,617,381.6667 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 | 7,852,145 | |
| -1 | -7,852,145 |
Let's try dividing by 4:
7,852,145 ÷ 4 = 1,963,036.25
If the quotient is a whole number, then 4 and 1,963,036.25 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 | 7,852,145 | |
| -1 | 7,852,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 31 | 35 | 155 | 217 | 1,085 | 7,237 | 36,185 | 50,659 | 224,347 | 253,295 | 1,121,735 | 1,570,429 | 7,852,145 |
| -1 | -5 | -7 | -31 | -35 | -155 | -217 | -1,085 | -7,237 | -36,185 | -50,659 | -224,347 | -253,295 | -1,121,735 | -1,570,429 | -7,852,145 |
Here are some more numbers to try:
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