A:
Positive:
1 x 285361455 x 570722911 x 259419529 x 98400555 x 518839145 x 196801319 x 894551595 x 17891
Negative:
-1 x -28536145-5 x -5707229-11 x -2594195-29 x -984005-55 x -518839-145 x -196801-319 x -89455-1595 x -17891
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 28,536,145, 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 | 28,536,145 | |
| -1 | -28,536,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,536,145.
Example:
1 x 28,536,145 = 28,536,145
and
-1 x -28,536,145 = 28,536,145
Notice both answers equal 28,536,145
With that explanation out of the way, let's continue. Next, we take the number 28,536,145 and divide it by 2:
28,536,145 ÷ 2 = 14,268,072.5
If the quotient is a whole number, then 2 and 14,268,072.5 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 | 28,536,145 | |
| -1 | -28,536,145 |
Now, we try dividing 28,536,145 by 3:
28,536,145 ÷ 3 = 9,512,048.3333
If the quotient is a whole number, then 3 and 9,512,048.3333 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 | 28,536,145 | |
| -1 | -28,536,145 |
Let's try dividing by 4:
28,536,145 ÷ 4 = 7,134,036.25
If the quotient is a whole number, then 4 and 7,134,036.25 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 | 28,536,145 | |
| -1 | 28,536,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 29 | 55 | 145 | 319 | 1,595 | 17,891 | 89,455 | 196,801 | 518,839 | 984,005 | 2,594,195 | 5,707,229 | 28,536,145 |
| -1 | -5 | -11 | -29 | -55 | -145 | -319 | -1,595 | -17,891 | -89,455 | -196,801 | -518,839 | -984,005 | -2,594,195 | -5,707,229 | -28,536,145 |
Here are some more numbers to try:
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