A:
Positive:
1 x 312651855 x 62530377 x 446645535 x 89329137 x 84500549 x 638065185 x 169001245 x 127613259 x 1207151295 x 241431813 x 172453449 x 9065
Negative:
-1 x -31265185-5 x -6253037-7 x -4466455-35 x -893291-37 x -845005-49 x -638065-185 x -169001-245 x -127613-259 x -120715-1295 x -24143-1813 x -17245-3449 x -9065
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 31,265,185, 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 | 31,265,185 | |
| -1 | -31,265,185 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,265,185.
Example:
1 x 31,265,185 = 31,265,185
and
-1 x -31,265,185 = 31,265,185
Notice both answers equal 31,265,185
With that explanation out of the way, let's continue. Next, we take the number 31,265,185 and divide it by 2:
31,265,185 ÷ 2 = 15,632,592.5
If the quotient is a whole number, then 2 and 15,632,592.5 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 | 31,265,185 | |
| -1 | -31,265,185 |
Now, we try dividing 31,265,185 by 3:
31,265,185 ÷ 3 = 10,421,728.3333
If the quotient is a whole number, then 3 and 10,421,728.3333 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 | 31,265,185 | |
| -1 | -31,265,185 |
Let's try dividing by 4:
31,265,185 ÷ 4 = 7,816,296.25
If the quotient is a whole number, then 4 and 7,816,296.25 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 | 31,265,185 | |
| -1 | 31,265,185 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 37 | 49 | 185 | 245 | 259 | 1,295 | 1,813 | 3,449 | 9,065 | 17,245 | 24,143 | 120,715 | 127,613 | 169,001 | 638,065 | 845,005 | 893,291 | 4,466,455 | 6,253,037 | 31,265,185 |
| -1 | -5 | -7 | -35 | -37 | -49 | -185 | -245 | -259 | -1,295 | -1,813 | -3,449 | -9,065 | -17,245 | -24,143 | -120,715 | -127,613 | -169,001 | -638,065 | -845,005 | -893,291 | -4,466,455 | -6,253,037 | -31,265,185 |
Here are some more numbers to try:
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