A:
Positive:
1 x 283679455 x 567358929 x 97820531 x 915095145 x 195641155 x 183019899 x 315554495 x 6311
Negative:
-1 x -28367945-5 x -5673589-29 x -978205-31 x -915095-145 x -195641-155 x -183019-899 x -31555-4495 x -6311
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 28,367,945, 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 | 28,367,945 | |
| -1 | -28,367,945 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,367,945.
Example:
1 x 28,367,945 = 28,367,945
and
-1 x -28,367,945 = 28,367,945
Notice both answers equal 28,367,945
With that explanation out of the way, let's continue. Next, we take the number 28,367,945 and divide it by 2:
28,367,945 ÷ 2 = 14,183,972.5
If the quotient is a whole number, then 2 and 14,183,972.5 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 | 28,367,945 | |
| -1 | -28,367,945 |
Now, we try dividing 28,367,945 by 3:
28,367,945 ÷ 3 = 9,455,981.6667
If the quotient is a whole number, then 3 and 9,455,981.6667 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 | 28,367,945 | |
| -1 | -28,367,945 |
Let's try dividing by 4:
28,367,945 ÷ 4 = 7,091,986.25
If the quotient is a whole number, then 4 and 7,091,986.25 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 | 28,367,945 | |
| -1 | 28,367,945 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 31 | 145 | 155 | 899 | 4,495 | 6,311 | 31,555 | 183,019 | 195,641 | 915,095 | 978,205 | 5,673,589 | 28,367,945 |
| -1 | -5 | -29 | -31 | -145 | -155 | -899 | -4,495 | -6,311 | -31,555 | -183,019 | -195,641 | -915,095 | -978,205 | -5,673,589 | -28,367,945 |
Here are some more numbers to try:
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