A:
Positive:
1 x 874304655 x 1748609371 x 123141597 x 901345355 x 246283485 x 1802692539 x 344356887 x 12695
Negative:
-1 x -87430465-5 x -17486093-71 x -1231415-97 x -901345-355 x -246283-485 x -180269-2539 x -34435-6887 x -12695
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 87,430,465, 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 | 87,430,465 | |
| -1 | -87,430,465 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,430,465.
Example:
1 x 87,430,465 = 87,430,465
and
-1 x -87,430,465 = 87,430,465
Notice both answers equal 87,430,465
With that explanation out of the way, let's continue. Next, we take the number 87,430,465 and divide it by 2:
87,430,465 ÷ 2 = 43,715,232.5
If the quotient is a whole number, then 2 and 43,715,232.5 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 | 87,430,465 | |
| -1 | -87,430,465 |
Now, we try dividing 87,430,465 by 3:
87,430,465 ÷ 3 = 29,143,488.3333
If the quotient is a whole number, then 3 and 29,143,488.3333 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 | 87,430,465 | |
| -1 | -87,430,465 |
Let's try dividing by 4:
87,430,465 ÷ 4 = 21,857,616.25
If the quotient is a whole number, then 4 and 21,857,616.25 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 | 87,430,465 | |
| -1 | 87,430,465 |
If you did it right, you will end up with this table:
| 1 | 5 | 71 | 97 | 355 | 485 | 2,539 | 6,887 | 12,695 | 34,435 | 180,269 | 246,283 | 901,345 | 1,231,415 | 17,486,093 | 87,430,465 |
| -1 | -5 | -71 | -97 | -355 | -485 | -2,539 | -6,887 | -12,695 | -34,435 | -180,269 | -246,283 | -901,345 | -1,231,415 | -17,486,093 | -87,430,465 |
Here are some more numbers to try:
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