A:
Positive:
1 x 281678537 x 402397973 x 385861199 x 141547277 x 101689511 x 551231393 x 202211939 x 14527
Negative:
-1 x -28167853-7 x -4023979-73 x -385861-199 x -141547-277 x -101689-511 x -55123-1393 x -20221-1939 x -14527
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 28,167,853, 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 | 28,167,853 | |
| -1 | -28,167,853 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,167,853.
Example:
1 x 28,167,853 = 28,167,853
and
-1 x -28,167,853 = 28,167,853
Notice both answers equal 28,167,853
With that explanation out of the way, let's continue. Next, we take the number 28,167,853 and divide it by 2:
28,167,853 ÷ 2 = 14,083,926.5
If the quotient is a whole number, then 2 and 14,083,926.5 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 | 28,167,853 | |
| -1 | -28,167,853 |
Now, we try dividing 28,167,853 by 3:
28,167,853 ÷ 3 = 9,389,284.3333
If the quotient is a whole number, then 3 and 9,389,284.3333 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 | 28,167,853 | |
| -1 | -28,167,853 |
Let's try dividing by 4:
28,167,853 ÷ 4 = 7,041,963.25
If the quotient is a whole number, then 4 and 7,041,963.25 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 | 28,167,853 | |
| -1 | 28,167,853 |
If you did it right, you will end up with this table:
| 1 | 7 | 73 | 199 | 277 | 511 | 1,393 | 1,939 | 14,527 | 20,221 | 55,123 | 101,689 | 141,547 | 385,861 | 4,023,979 | 28,167,853 |
| -1 | -7 | -73 | -199 | -277 | -511 | -1,393 | -1,939 | -14,527 | -20,221 | -55,123 | -101,689 | -141,547 | -385,861 | -4,023,979 | -28,167,853 |
Here are some more numbers to try:
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