A:
Positive:
1 x 874348455 x 1748696923 x 3801515115 x 760303863 x 101315881 x 992454315 x 202634405 x 19849
Negative:
-1 x -87434845-5 x -17486969-23 x -3801515-115 x -760303-863 x -101315-881 x -99245-4315 x -20263-4405 x -19849
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 87,434,845, 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 | 87,434,845 | |
| -1 | -87,434,845 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,434,845.
Example:
1 x 87,434,845 = 87,434,845
and
-1 x -87,434,845 = 87,434,845
Notice both answers equal 87,434,845
With that explanation out of the way, let's continue. Next, we take the number 87,434,845 and divide it by 2:
87,434,845 ÷ 2 = 43,717,422.5
If the quotient is a whole number, then 2 and 43,717,422.5 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 | 87,434,845 | |
| -1 | -87,434,845 |
Now, we try dividing 87,434,845 by 3:
87,434,845 ÷ 3 = 29,144,948.3333
If the quotient is a whole number, then 3 and 29,144,948.3333 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 | 87,434,845 | |
| -1 | -87,434,845 |
Let's try dividing by 4:
87,434,845 ÷ 4 = 21,858,711.25
If the quotient is a whole number, then 4 and 21,858,711.25 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 | 87,434,845 | |
| -1 | 87,434,845 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 863 | 881 | 4,315 | 4,405 | 19,849 | 20,263 | 99,245 | 101,315 | 760,303 | 3,801,515 | 17,486,969 | 87,434,845 |
| -1 | -5 | -23 | -115 | -863 | -881 | -4,315 | -4,405 | -19,849 | -20,263 | -99,245 | -101,315 | -760,303 | -3,801,515 | -17,486,969 | -87,434,845 |
Here are some more numbers to try:
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