A:
Positive:
1 x 7614278931 x 245621983 x 917383101 x 753889293 x 2598732573 x 295933131 x 243198383 x 9083
Negative:
-1 x -76142789-31 x -2456219-83 x -917383-101 x -753889-293 x -259873-2573 x -29593-3131 x -24319-8383 x -9083
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 76,142,789, 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 | 76,142,789 | |
| -1 | -76,142,789 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 76,142,789.
Example:
1 x 76,142,789 = 76,142,789
and
-1 x -76,142,789 = 76,142,789
Notice both answers equal 76,142,789
With that explanation out of the way, let's continue. Next, we take the number 76,142,789 and divide it by 2:
76,142,789 ÷ 2 = 38,071,394.5
If the quotient is a whole number, then 2 and 38,071,394.5 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 | 76,142,789 | |
| -1 | -76,142,789 |
Now, we try dividing 76,142,789 by 3:
76,142,789 ÷ 3 = 25,380,929.6667
If the quotient is a whole number, then 3 and 25,380,929.6667 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 | 76,142,789 | |
| -1 | -76,142,789 |
Let's try dividing by 4:
76,142,789 ÷ 4 = 19,035,697.25
If the quotient is a whole number, then 4 and 19,035,697.25 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 | 76,142,789 | |
| -1 | 76,142,789 |
If you did it right, you will end up with this table:
| 1 | 31 | 83 | 101 | 293 | 2,573 | 3,131 | 8,383 | 9,083 | 24,319 | 29,593 | 259,873 | 753,889 | 917,383 | 2,456,219 | 76,142,789 |
| -1 | -31 | -83 | -101 | -293 | -2,573 | -3,131 | -8,383 | -9,083 | -24,319 | -29,593 | -259,873 | -753,889 | -917,383 | -2,456,219 | -76,142,789 |
Here are some more numbers to try:
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