A:
Positive:
1 x 313421455 x 626842937 x 847085185 x 169417191 x 164095887 x 35335955 x 328194435 x 7067
Negative:
-1 x -31342145-5 x -6268429-37 x -847085-185 x -169417-191 x -164095-887 x -35335-955 x -32819-4435 x -7067
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 31,342,145, 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 | 31,342,145 | |
| -1 | -31,342,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,342,145.
Example:
1 x 31,342,145 = 31,342,145
and
-1 x -31,342,145 = 31,342,145
Notice both answers equal 31,342,145
With that explanation out of the way, let's continue. Next, we take the number 31,342,145 and divide it by 2:
31,342,145 ÷ 2 = 15,671,072.5
If the quotient is a whole number, then 2 and 15,671,072.5 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 | 31,342,145 | |
| -1 | -31,342,145 |
Now, we try dividing 31,342,145 by 3:
31,342,145 ÷ 3 = 10,447,381.6667
If the quotient is a whole number, then 3 and 10,447,381.6667 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 | 31,342,145 | |
| -1 | -31,342,145 |
Let's try dividing by 4:
31,342,145 ÷ 4 = 7,835,536.25
If the quotient is a whole number, then 4 and 7,835,536.25 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 | 31,342,145 | |
| -1 | 31,342,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 185 | 191 | 887 | 955 | 4,435 | 7,067 | 32,819 | 35,335 | 164,095 | 169,417 | 847,085 | 6,268,429 | 31,342,145 |
| -1 | -5 | -37 | -185 | -191 | -887 | -955 | -4,435 | -7,067 | -32,819 | -35,335 | -164,095 | -169,417 | -847,085 | -6,268,429 | -31,342,145 |
Here are some more numbers to try:
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