A:
Positive:
1 x 151892517 x 216989311 x 138084177 x 19726379 x 192269121 x 125531227 x 66913553 x 27467847 x 17933869 x 174791589 x 95592497 x 6083
Negative:
-1 x -15189251-7 x -2169893-11 x -1380841-77 x -197263-79 x -192269-121 x -125531-227 x -66913-553 x -27467-847 x -17933-869 x -17479-1589 x -9559-2497 x -6083
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 15,189,251, 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 | 15,189,251 | |
| -1 | -15,189,251 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,189,251.
Example:
1 x 15,189,251 = 15,189,251
and
-1 x -15,189,251 = 15,189,251
Notice both answers equal 15,189,251
With that explanation out of the way, let's continue. Next, we take the number 15,189,251 and divide it by 2:
15,189,251 ÷ 2 = 7,594,625.5
If the quotient is a whole number, then 2 and 7,594,625.5 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 | 15,189,251 | |
| -1 | -15,189,251 |
Now, we try dividing 15,189,251 by 3:
15,189,251 ÷ 3 = 5,063,083.6667
If the quotient is a whole number, then 3 and 5,063,083.6667 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 | 15,189,251 | |
| -1 | -15,189,251 |
Let's try dividing by 4:
15,189,251 ÷ 4 = 3,797,312.75
If the quotient is a whole number, then 4 and 3,797,312.75 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 | 15,189,251 | |
| -1 | 15,189,251 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 79 | 121 | 227 | 553 | 847 | 869 | 1,589 | 2,497 | 6,083 | 9,559 | 17,479 | 17,933 | 27,467 | 66,913 | 125,531 | 192,269 | 197,263 | 1,380,841 | 2,169,893 | 15,189,251 |
| -1 | -7 | -11 | -77 | -79 | -121 | -227 | -553 | -847 | -869 | -1,589 | -2,497 | -6,083 | -9,559 | -17,479 | -17,933 | -27,467 | -66,913 | -125,531 | -192,269 | -197,263 | -1,380,841 | -2,169,893 | -15,189,251 |
Here are some more numbers to try:
Try the factor calculator