A:
Positive:
1 x 288016155 x 576032343 x 669805109 x 264235215 x 133961545 x 528471229 x 234354687 x 6145
Negative:
-1 x -28801615-5 x -5760323-43 x -669805-109 x -264235-215 x -133961-545 x -52847-1229 x -23435-4687 x -6145
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 28,801,615, 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 | 28,801,615 | |
| -1 | -28,801,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,801,615.
Example:
1 x 28,801,615 = 28,801,615
and
-1 x -28,801,615 = 28,801,615
Notice both answers equal 28,801,615
With that explanation out of the way, let's continue. Next, we take the number 28,801,615 and divide it by 2:
28,801,615 ÷ 2 = 14,400,807.5
If the quotient is a whole number, then 2 and 14,400,807.5 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 | 28,801,615 | |
| -1 | -28,801,615 |
Now, we try dividing 28,801,615 by 3:
28,801,615 ÷ 3 = 9,600,538.3333
If the quotient is a whole number, then 3 and 9,600,538.3333 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 | 28,801,615 | |
| -1 | -28,801,615 |
Let's try dividing by 4:
28,801,615 ÷ 4 = 7,200,403.75
If the quotient is a whole number, then 4 and 7,200,403.75 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 | 28,801,615 | |
| -1 | 28,801,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 109 | 215 | 545 | 1,229 | 4,687 | 6,145 | 23,435 | 52,847 | 133,961 | 264,235 | 669,805 | 5,760,323 | 28,801,615 |
| -1 | -5 | -43 | -109 | -215 | -545 | -1,229 | -4,687 | -6,145 | -23,435 | -52,847 | -133,961 | -264,235 | -669,805 | -5,760,323 | -28,801,615 |
Here are some more numbers to try:
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