A:
Positive:
1 x 152451537 x 217787911 x 138592341 x 37183377 x 197989121 x 125993287 x 53119439 x 34727451 x 33803847 x 179993073 x 49613157 x 4829
Negative:
-1 x -15245153-7 x -2177879-11 x -1385923-41 x -371833-77 x -197989-121 x -125993-287 x -53119-439 x -34727-451 x -33803-847 x -17999-3073 x -4961-3157 x -4829
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 15,245,153, 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 | 15,245,153 | |
| -1 | -15,245,153 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,245,153.
Example:
1 x 15,245,153 = 15,245,153
and
-1 x -15,245,153 = 15,245,153
Notice both answers equal 15,245,153
With that explanation out of the way, let's continue. Next, we take the number 15,245,153 and divide it by 2:
15,245,153 ÷ 2 = 7,622,576.5
If the quotient is a whole number, then 2 and 7,622,576.5 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 | 15,245,153 | |
| -1 | -15,245,153 |
Now, we try dividing 15,245,153 by 3:
15,245,153 ÷ 3 = 5,081,717.6667
If the quotient is a whole number, then 3 and 5,081,717.6667 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 | 15,245,153 | |
| -1 | -15,245,153 |
Let's try dividing by 4:
15,245,153 ÷ 4 = 3,811,288.25
If the quotient is a whole number, then 4 and 3,811,288.25 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 | 15,245,153 | |
| -1 | 15,245,153 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 41 | 77 | 121 | 287 | 439 | 451 | 847 | 3,073 | 3,157 | 4,829 | 4,961 | 17,999 | 33,803 | 34,727 | 53,119 | 125,993 | 197,989 | 371,833 | 1,385,923 | 2,177,879 | 15,245,153 |
| -1 | -7 | -11 | -41 | -77 | -121 | -287 | -439 | -451 | -847 | -3,073 | -3,157 | -4,829 | -4,961 | -17,999 | -33,803 | -34,727 | -53,119 | -125,993 | -197,989 | -371,833 | -1,385,923 | -2,177,879 | -15,245,153 |
Here are some more numbers to try:
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