A:
Positive:
1 x 2557712311 x 232519313 x 1967471143 x 178861383 x 66781467 x 547694213 x 60714979 x 5137
Negative:
-1 x -25577123-11 x -2325193-13 x -1967471-143 x -178861-383 x -66781-467 x -54769-4213 x -6071-4979 x -5137
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 25,577,123, 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 | 25,577,123 | |
| -1 | -25,577,123 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,577,123.
Example:
1 x 25,577,123 = 25,577,123
and
-1 x -25,577,123 = 25,577,123
Notice both answers equal 25,577,123
With that explanation out of the way, let's continue. Next, we take the number 25,577,123 and divide it by 2:
25,577,123 ÷ 2 = 12,788,561.5
If the quotient is a whole number, then 2 and 12,788,561.5 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 | 25,577,123 | |
| -1 | -25,577,123 |
Now, we try dividing 25,577,123 by 3:
25,577,123 ÷ 3 = 8,525,707.6667
If the quotient is a whole number, then 3 and 8,525,707.6667 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 | 25,577,123 | |
| -1 | -25,577,123 |
Let's try dividing by 4:
25,577,123 ÷ 4 = 6,394,280.75
If the quotient is a whole number, then 4 and 6,394,280.75 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 | 25,577,123 | |
| -1 | 25,577,123 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 383 | 467 | 4,213 | 4,979 | 5,137 | 6,071 | 54,769 | 66,781 | 178,861 | 1,967,471 | 2,325,193 | 25,577,123 |
| -1 | -11 | -13 | -143 | -383 | -467 | -4,213 | -4,979 | -5,137 | -6,071 | -54,769 | -66,781 | -178,861 | -1,967,471 | -2,325,193 | -25,577,123 |
Here are some more numbers to try:
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