A:
Positive:
1 x 758478497 x 1083540711 x 689525977 x 985037179 x 4237311253 x 605331969 x 385215503 x 13783
Negative:
-1 x -75847849-7 x -10835407-11 x -6895259-77 x -985037-179 x -423731-1253 x -60533-1969 x -38521-5503 x -13783
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 75,847,849, 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 | 75,847,849 | |
| -1 | -75,847,849 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 75,847,849.
Example:
1 x 75,847,849 = 75,847,849
and
-1 x -75,847,849 = 75,847,849
Notice both answers equal 75,847,849
With that explanation out of the way, let's continue. Next, we take the number 75,847,849 and divide it by 2:
75,847,849 ÷ 2 = 37,923,924.5
If the quotient is a whole number, then 2 and 37,923,924.5 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 | 75,847,849 | |
| -1 | -75,847,849 |
Now, we try dividing 75,847,849 by 3:
75,847,849 ÷ 3 = 25,282,616.3333
If the quotient is a whole number, then 3 and 25,282,616.3333 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 | 75,847,849 | |
| -1 | -75,847,849 |
Let's try dividing by 4:
75,847,849 ÷ 4 = 18,961,962.25
If the quotient is a whole number, then 4 and 18,961,962.25 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 | 75,847,849 | |
| -1 | 75,847,849 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 179 | 1,253 | 1,969 | 5,503 | 13,783 | 38,521 | 60,533 | 423,731 | 985,037 | 6,895,259 | 10,835,407 | 75,847,849 |
| -1 | -7 | -11 | -77 | -179 | -1,253 | -1,969 | -5,503 | -13,783 | -38,521 | -60,533 | -423,731 | -985,037 | -6,895,259 | -10,835,407 | -75,847,849 |
Here are some more numbers to try:
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