A:
Positive:
1 x 1537721911 x 139792913 x 1182863143 x 107533191 x 80509563 x 273132101 x 73192483 x 6193
Negative:
-1 x -15377219-11 x -1397929-13 x -1182863-143 x -107533-191 x -80509-563 x -27313-2101 x -7319-2483 x -6193
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 15,377,219, 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 | 15,377,219 | |
| -1 | -15,377,219 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,377,219.
Example:
1 x 15,377,219 = 15,377,219
and
-1 x -15,377,219 = 15,377,219
Notice both answers equal 15,377,219
With that explanation out of the way, let's continue. Next, we take the number 15,377,219 and divide it by 2:
15,377,219 ÷ 2 = 7,688,609.5
If the quotient is a whole number, then 2 and 7,688,609.5 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 | 15,377,219 | |
| -1 | -15,377,219 |
Now, we try dividing 15,377,219 by 3:
15,377,219 ÷ 3 = 5,125,739.6667
If the quotient is a whole number, then 3 and 5,125,739.6667 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 | 15,377,219 | |
| -1 | -15,377,219 |
Let's try dividing by 4:
15,377,219 ÷ 4 = 3,844,304.75
If the quotient is a whole number, then 4 and 3,844,304.75 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 | 15,377,219 | |
| -1 | 15,377,219 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 143 | 191 | 563 | 2,101 | 2,483 | 6,193 | 7,319 | 27,313 | 80,509 | 107,533 | 1,182,863 | 1,397,929 | 15,377,219 |
| -1 | -11 | -13 | -143 | -191 | -563 | -2,101 | -2,483 | -6,193 | -7,319 | -27,313 | -80,509 | -107,533 | -1,182,863 | -1,397,929 | -15,377,219 |
Here are some more numbers to try:
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