A:
Positive:
1 x 255752155 x 5115043109 x 234635167 x 153145281 x 91015545 x 46927835 x 306291405 x 18203
Negative:
-1 x -25575215-5 x -5115043-109 x -234635-167 x -153145-281 x -91015-545 x -46927-835 x -30629-1405 x -18203
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 25,575,215, 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 | 25,575,215 | |
| -1 | -25,575,215 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,575,215.
Example:
1 x 25,575,215 = 25,575,215
and
-1 x -25,575,215 = 25,575,215
Notice both answers equal 25,575,215
With that explanation out of the way, let's continue. Next, we take the number 25,575,215 and divide it by 2:
25,575,215 ÷ 2 = 12,787,607.5
If the quotient is a whole number, then 2 and 12,787,607.5 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 | 25,575,215 | |
| -1 | -25,575,215 |
Now, we try dividing 25,575,215 by 3:
25,575,215 ÷ 3 = 8,525,071.6667
If the quotient is a whole number, then 3 and 8,525,071.6667 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 | 25,575,215 | |
| -1 | -25,575,215 |
Let's try dividing by 4:
25,575,215 ÷ 4 = 6,393,803.75
If the quotient is a whole number, then 4 and 6,393,803.75 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 | 25,575,215 | |
| -1 | 25,575,215 |
If you did it right, you will end up with this table:
| 1 | 5 | 109 | 167 | 281 | 545 | 835 | 1,405 | 18,203 | 30,629 | 46,927 | 91,015 | 153,145 | 234,635 | 5,115,043 | 25,575,215 |
| -1 | -5 | -109 | -167 | -281 | -545 | -835 | -1,405 | -18,203 | -30,629 | -46,927 | -91,015 | -153,145 | -234,635 | -5,115,043 | -25,575,215 |
Here are some more numbers to try:
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