A:
Positive:
1 x 866281437 x 1237544923 x 3766441161 x 538063163 x 5314611141 x 759233301 x 262433749 x 23107
Negative:
-1 x -86628143-7 x -12375449-23 x -3766441-161 x -538063-163 x -531461-1141 x -75923-3301 x -26243-3749 x -23107
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 86,628,143, 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 | 86,628,143 | |
| -1 | -86,628,143 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 86,628,143.
Example:
1 x 86,628,143 = 86,628,143
and
-1 x -86,628,143 = 86,628,143
Notice both answers equal 86,628,143
With that explanation out of the way, let's continue. Next, we take the number 86,628,143 and divide it by 2:
86,628,143 ÷ 2 = 43,314,071.5
If the quotient is a whole number, then 2 and 43,314,071.5 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 | 86,628,143 | |
| -1 | -86,628,143 |
Now, we try dividing 86,628,143 by 3:
86,628,143 ÷ 3 = 28,876,047.6667
If the quotient is a whole number, then 3 and 28,876,047.6667 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 | 86,628,143 | |
| -1 | -86,628,143 |
Let's try dividing by 4:
86,628,143 ÷ 4 = 21,657,035.75
If the quotient is a whole number, then 4 and 21,657,035.75 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 | 86,628,143 | |
| -1 | 86,628,143 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 163 | 1,141 | 3,301 | 3,749 | 23,107 | 26,243 | 75,923 | 531,461 | 538,063 | 3,766,441 | 12,375,449 | 86,628,143 |
| -1 | -7 | -23 | -161 | -163 | -1,141 | -3,301 | -3,749 | -23,107 | -26,243 | -75,923 | -531,461 | -538,063 | -3,766,441 | -12,375,449 | -86,628,143 |
Here are some more numbers to try:
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