A:
Positive:
1 x 152169297 x 217384713 x 117053319 x 80089191 x 167219133 x 114413169 x 90041247 x 61607677 x 224771183 x 128631729 x 88013211 x 4739
Negative:
-1 x -15216929-7 x -2173847-13 x -1170533-19 x -800891-91 x -167219-133 x -114413-169 x -90041-247 x -61607-677 x -22477-1183 x -12863-1729 x -8801-3211 x -4739
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 15,216,929, 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 | 15,216,929 | |
| -1 | -15,216,929 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,216,929.
Example:
1 x 15,216,929 = 15,216,929
and
-1 x -15,216,929 = 15,216,929
Notice both answers equal 15,216,929
With that explanation out of the way, let's continue. Next, we take the number 15,216,929 and divide it by 2:
15,216,929 ÷ 2 = 7,608,464.5
If the quotient is a whole number, then 2 and 7,608,464.5 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 | 15,216,929 | |
| -1 | -15,216,929 |
Now, we try dividing 15,216,929 by 3:
15,216,929 ÷ 3 = 5,072,309.6667
If the quotient is a whole number, then 3 and 5,072,309.6667 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 | 15,216,929 | |
| -1 | -15,216,929 |
Let's try dividing by 4:
15,216,929 ÷ 4 = 3,804,232.25
If the quotient is a whole number, then 4 and 3,804,232.25 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 | 15,216,929 | |
| -1 | 15,216,929 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 19 | 91 | 133 | 169 | 247 | 677 | 1,183 | 1,729 | 3,211 | 4,739 | 8,801 | 12,863 | 22,477 | 61,607 | 90,041 | 114,413 | 167,219 | 800,891 | 1,170,533 | 2,173,847 | 15,216,929 |
| -1 | -7 | -13 | -19 | -91 | -133 | -169 | -247 | -677 | -1,183 | -1,729 | -3,211 | -4,739 | -8,801 | -12,863 | -22,477 | -61,607 | -90,041 | -114,413 | -167,219 | -800,891 | -1,170,533 | -2,173,847 | -15,216,929 |
Here are some more numbers to try:
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