A:
Positive:
1 x 2887207713 x 222092919 x 151958341 x 704197247 x 116891533 x 54169779 x 370632851 x 10127
Negative:
-1 x -28872077-13 x -2220929-19 x -1519583-41 x -704197-247 x -116891-533 x -54169-779 x -37063-2851 x -10127
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 28,872,077, 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 | 28,872,077 | |
| -1 | -28,872,077 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,872,077.
Example:
1 x 28,872,077 = 28,872,077
and
-1 x -28,872,077 = 28,872,077
Notice both answers equal 28,872,077
With that explanation out of the way, let's continue. Next, we take the number 28,872,077 and divide it by 2:
28,872,077 ÷ 2 = 14,436,038.5
If the quotient is a whole number, then 2 and 14,436,038.5 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 | 28,872,077 | |
| -1 | -28,872,077 |
Now, we try dividing 28,872,077 by 3:
28,872,077 ÷ 3 = 9,624,025.6667
If the quotient is a whole number, then 3 and 9,624,025.6667 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 | 28,872,077 | |
| -1 | -28,872,077 |
Let's try dividing by 4:
28,872,077 ÷ 4 = 7,218,019.25
If the quotient is a whole number, then 4 and 7,218,019.25 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 | 28,872,077 | |
| -1 | 28,872,077 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 41 | 247 | 533 | 779 | 2,851 | 10,127 | 37,063 | 54,169 | 116,891 | 704,197 | 1,519,583 | 2,220,929 | 28,872,077 |
| -1 | -13 | -19 | -41 | -247 | -533 | -779 | -2,851 | -10,127 | -37,063 | -54,169 | -116,891 | -704,197 | -1,519,583 | -2,220,929 | -28,872,077 |
Here are some more numbers to try:
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