A:
Positive:
1 x 8745432119 x 460285971 x 1231751241 x 362881269 x 3251091349 x 648294579 x 190995111 x 17111
Negative:
-1 x -87454321-19 x -4602859-71 x -1231751-241 x -362881-269 x -325109-1349 x -64829-4579 x -19099-5111 x -17111
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 87,454,321, 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 | 87,454,321 | |
| -1 | -87,454,321 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 87,454,321.
Example:
1 x 87,454,321 = 87,454,321
and
-1 x -87,454,321 = 87,454,321
Notice both answers equal 87,454,321
With that explanation out of the way, let's continue. Next, we take the number 87,454,321 and divide it by 2:
87,454,321 ÷ 2 = 43,727,160.5
If the quotient is a whole number, then 2 and 43,727,160.5 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 | 87,454,321 | |
| -1 | -87,454,321 |
Now, we try dividing 87,454,321 by 3:
87,454,321 ÷ 3 = 29,151,440.3333
If the quotient is a whole number, then 3 and 29,151,440.3333 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 | 87,454,321 | |
| -1 | -87,454,321 |
Let's try dividing by 4:
87,454,321 ÷ 4 = 21,863,580.25
If the quotient is a whole number, then 4 and 21,863,580.25 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 | 87,454,321 | |
| -1 | 87,454,321 |
If you did it right, you will end up with this table:
| 1 | 19 | 71 | 241 | 269 | 1,349 | 4,579 | 5,111 | 17,111 | 19,099 | 64,829 | 325,109 | 362,881 | 1,231,751 | 4,602,859 | 87,454,321 |
| -1 | -19 | -71 | -241 | -269 | -1,349 | -4,579 | -5,111 | -17,111 | -19,099 | -64,829 | -325,109 | -362,881 | -1,231,751 | -4,602,859 | -87,454,321 |
Here are some more numbers to try:
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