A:
Positive:
1 x 7410913913 x 570070319 x 3900481151 x 490789247 x 3000371963 x 377531987 x 372972869 x 25831
Negative:
-1 x -74109139-13 x -5700703-19 x -3900481-151 x -490789-247 x -300037-1963 x -37753-1987 x -37297-2869 x -25831
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 74,109,139, 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 | 74,109,139 | |
| -1 | -74,109,139 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 74,109,139.
Example:
1 x 74,109,139 = 74,109,139
and
-1 x -74,109,139 = 74,109,139
Notice both answers equal 74,109,139
With that explanation out of the way, let's continue. Next, we take the number 74,109,139 and divide it by 2:
74,109,139 ÷ 2 = 37,054,569.5
If the quotient is a whole number, then 2 and 37,054,569.5 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 | 74,109,139 | |
| -1 | -74,109,139 |
Now, we try dividing 74,109,139 by 3:
74,109,139 ÷ 3 = 24,703,046.3333
If the quotient is a whole number, then 3 and 24,703,046.3333 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 | 74,109,139 | |
| -1 | -74,109,139 |
Let's try dividing by 4:
74,109,139 ÷ 4 = 18,527,284.75
If the quotient is a whole number, then 4 and 18,527,284.75 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 | 74,109,139 | |
| -1 | 74,109,139 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 151 | 247 | 1,963 | 1,987 | 2,869 | 25,831 | 37,297 | 37,753 | 300,037 | 490,789 | 3,900,481 | 5,700,703 | 74,109,139 |
| -1 | -13 | -19 | -151 | -247 | -1,963 | -1,987 | -2,869 | -25,831 | -37,297 | -37,753 | -300,037 | -490,789 | -3,900,481 | -5,700,703 | -74,109,139 |
Here are some more numbers to try:
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