A:
Positive:
1 x 871863255 x 1743726525 x 348745329 x 300642553 x 1645025145 x 601285265 x 329005725 x 1202571325 x 658011537 x 567252269 x 384257685 x 11345
Negative:
-1 x -87186325-5 x -17437265-25 x -3487453-29 x -3006425-53 x -1645025-145 x -601285-265 x -329005-725 x -120257-1325 x -65801-1537 x -56725-2269 x -38425-7685 x -11345
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 87,186,325, 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 | 87,186,325 | |
| -1 | -87,186,325 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,186,325.
Example:
1 x 87,186,325 = 87,186,325
and
-1 x -87,186,325 = 87,186,325
Notice both answers equal 87,186,325
With that explanation out of the way, let's continue. Next, we take the number 87,186,325 and divide it by 2:
87,186,325 ÷ 2 = 43,593,162.5
If the quotient is a whole number, then 2 and 43,593,162.5 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 | 87,186,325 | |
| -1 | -87,186,325 |
Now, we try dividing 87,186,325 by 3:
87,186,325 ÷ 3 = 29,062,108.3333
If the quotient is a whole number, then 3 and 29,062,108.3333 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 | 87,186,325 | |
| -1 | -87,186,325 |
Let's try dividing by 4:
87,186,325 ÷ 4 = 21,796,581.25
If the quotient is a whole number, then 4 and 21,796,581.25 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 | 87,186,325 | |
| -1 | 87,186,325 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 29 | 53 | 145 | 265 | 725 | 1,325 | 1,537 | 2,269 | 7,685 | 11,345 | 38,425 | 56,725 | 65,801 | 120,257 | 329,005 | 601,285 | 1,645,025 | 3,006,425 | 3,487,453 | 17,437,265 | 87,186,325 |
| -1 | -5 | -25 | -29 | -53 | -145 | -265 | -725 | -1,325 | -1,537 | -2,269 | -7,685 | -11,345 | -38,425 | -56,725 | -65,801 | -120,257 | -329,005 | -601,285 | -1,645,025 | -3,006,425 | -3,487,453 | -17,437,265 | -87,186,325 |
Here are some more numbers to try:
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