A:
Positive:
1 x 129914755 x 25982957 x 185592525 x 51965935 x 37118561 x 212975175 x 74237305 x 42595427 x 304251217 x 106751525 x 85192135 x 6085
Negative:
-1 x -12991475-5 x -2598295-7 x -1855925-25 x -519659-35 x -371185-61 x -212975-175 x -74237-305 x -42595-427 x -30425-1217 x -10675-1525 x -8519-2135 x -6085
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 12,991,475, 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 | 12,991,475 | |
| -1 | -12,991,475 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,991,475.
Example:
1 x 12,991,475 = 12,991,475
and
-1 x -12,991,475 = 12,991,475
Notice both answers equal 12,991,475
With that explanation out of the way, let's continue. Next, we take the number 12,991,475 and divide it by 2:
12,991,475 ÷ 2 = 6,495,737.5
If the quotient is a whole number, then 2 and 6,495,737.5 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 | 12,991,475 | |
| -1 | -12,991,475 |
Now, we try dividing 12,991,475 by 3:
12,991,475 ÷ 3 = 4,330,491.6667
If the quotient is a whole number, then 3 and 4,330,491.6667 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 | 12,991,475 | |
| -1 | -12,991,475 |
Let's try dividing by 4:
12,991,475 ÷ 4 = 3,247,868.75
If the quotient is a whole number, then 4 and 3,247,868.75 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 | 12,991,475 | |
| -1 | 12,991,475 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 25 | 35 | 61 | 175 | 305 | 427 | 1,217 | 1,525 | 2,135 | 6,085 | 8,519 | 10,675 | 30,425 | 42,595 | 74,237 | 212,975 | 371,185 | 519,659 | 1,855,925 | 2,598,295 | 12,991,475 |
| -1 | -5 | -7 | -25 | -35 | -61 | -175 | -305 | -427 | -1,217 | -1,525 | -2,135 | -6,085 | -8,519 | -10,675 | -30,425 | -42,595 | -74,237 | -212,975 | -371,185 | -519,659 | -1,855,925 | -2,598,295 | -12,991,475 |
Here are some more numbers to try:
Try the factor calculator