A:
Positive:
1 x 283128377 x 404469117 x 166546141 x 69055749 x 577813119 x 237923287 x 98651697 x 40621829 x 34153833 x 339892009 x 140934879 x 5803
Negative:
-1 x -28312837-7 x -4044691-17 x -1665461-41 x -690557-49 x -577813-119 x -237923-287 x -98651-697 x -40621-829 x -34153-833 x -33989-2009 x -14093-4879 x -5803
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 28,312,837, 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 | 28,312,837 | |
| -1 | -28,312,837 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,312,837.
Example:
1 x 28,312,837 = 28,312,837
and
-1 x -28,312,837 = 28,312,837
Notice both answers equal 28,312,837
With that explanation out of the way, let's continue. Next, we take the number 28,312,837 and divide it by 2:
28,312,837 ÷ 2 = 14,156,418.5
If the quotient is a whole number, then 2 and 14,156,418.5 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 | 28,312,837 | |
| -1 | -28,312,837 |
Now, we try dividing 28,312,837 by 3:
28,312,837 ÷ 3 = 9,437,612.3333
If the quotient is a whole number, then 3 and 9,437,612.3333 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 | 28,312,837 | |
| -1 | -28,312,837 |
Let's try dividing by 4:
28,312,837 ÷ 4 = 7,078,209.25
If the quotient is a whole number, then 4 and 7,078,209.25 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 | 28,312,837 | |
| -1 | 28,312,837 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 41 | 49 | 119 | 287 | 697 | 829 | 833 | 2,009 | 4,879 | 5,803 | 14,093 | 33,989 | 34,153 | 40,621 | 98,651 | 237,923 | 577,813 | 690,557 | 1,665,461 | 4,044,691 | 28,312,837 |
| -1 | -7 | -17 | -41 | -49 | -119 | -287 | -697 | -829 | -833 | -2,009 | -4,879 | -5,803 | -14,093 | -33,989 | -34,153 | -40,621 | -98,651 | -237,923 | -577,813 | -690,557 | -1,665,461 | -4,044,691 | -28,312,837 |
Here are some more numbers to try:
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