A:
Positive:
1 x 2501211137 x 67600343 x 58167779 x 316609199 x 1256891591 x 157212923 x 85573397 x 7363
Negative:
-1 x -25012111-37 x -676003-43 x -581677-79 x -316609-199 x -125689-1591 x -15721-2923 x -8557-3397 x -7363
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 25,012,111, 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 | 25,012,111 | |
| -1 | -25,012,111 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,012,111.
Example:
1 x 25,012,111 = 25,012,111
and
-1 x -25,012,111 = 25,012,111
Notice both answers equal 25,012,111
With that explanation out of the way, let's continue. Next, we take the number 25,012,111 and divide it by 2:
25,012,111 ÷ 2 = 12,506,055.5
If the quotient is a whole number, then 2 and 12,506,055.5 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 | 25,012,111 | |
| -1 | -25,012,111 |
Now, we try dividing 25,012,111 by 3:
25,012,111 ÷ 3 = 8,337,370.3333
If the quotient is a whole number, then 3 and 8,337,370.3333 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 | 25,012,111 | |
| -1 | -25,012,111 |
Let's try dividing by 4:
25,012,111 ÷ 4 = 6,253,027.75
If the quotient is a whole number, then 4 and 6,253,027.75 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 | 25,012,111 | |
| -1 | 25,012,111 |
If you did it right, you will end up with this table:
| 1 | 37 | 43 | 79 | 199 | 1,591 | 2,923 | 3,397 | 7,363 | 8,557 | 15,721 | 125,689 | 316,609 | 581,677 | 676,003 | 25,012,111 |
| -1 | -37 | -43 | -79 | -199 | -1,591 | -2,923 | -3,397 | -7,363 | -8,557 | -15,721 | -125,689 | -316,609 | -581,677 | -676,003 | -25,012,111 |
Here are some more numbers to try:
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