A:
Positive:
1 x 1592828913 x 122525319 x 83833159 x 269971247 x 64487767 x 207671093 x 145731121 x 14209
Negative:
-1 x -15928289-13 x -1225253-19 x -838331-59 x -269971-247 x -64487-767 x -20767-1093 x -14573-1121 x -14209
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 15,928,289, 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 | 15,928,289 | |
| -1 | -15,928,289 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,928,289.
Example:
1 x 15,928,289 = 15,928,289
and
-1 x -15,928,289 = 15,928,289
Notice both answers equal 15,928,289
With that explanation out of the way, let's continue. Next, we take the number 15,928,289 and divide it by 2:
15,928,289 ÷ 2 = 7,964,144.5
If the quotient is a whole number, then 2 and 7,964,144.5 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 | 15,928,289 | |
| -1 | -15,928,289 |
Now, we try dividing 15,928,289 by 3:
15,928,289 ÷ 3 = 5,309,429.6667
If the quotient is a whole number, then 3 and 5,309,429.6667 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 | 15,928,289 | |
| -1 | -15,928,289 |
Let's try dividing by 4:
15,928,289 ÷ 4 = 3,982,072.25
If the quotient is a whole number, then 4 and 3,982,072.25 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 | 15,928,289 | |
| -1 | 15,928,289 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 59 | 247 | 767 | 1,093 | 1,121 | 14,209 | 14,573 | 20,767 | 64,487 | 269,971 | 838,331 | 1,225,253 | 15,928,289 |
| -1 | -13 | -19 | -59 | -247 | -767 | -1,093 | -1,121 | -14,209 | -14,573 | -20,767 | -64,487 | -269,971 | -838,331 | -1,225,253 | -15,928,289 |
Here are some more numbers to try:
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