A:
Positive:
1 x 1310652129 x 45194931 x 42279161 x 214861239 x 54839899 x 145791769 x 74091891 x 6931
Negative:
-1 x -13106521-29 x -451949-31 x -422791-61 x -214861-239 x -54839-899 x -14579-1769 x -7409-1891 x -6931
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 13,106,521, 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 | 13,106,521 | |
| -1 | -13,106,521 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,106,521.
Example:
1 x 13,106,521 = 13,106,521
and
-1 x -13,106,521 = 13,106,521
Notice both answers equal 13,106,521
With that explanation out of the way, let's continue. Next, we take the number 13,106,521 and divide it by 2:
13,106,521 ÷ 2 = 6,553,260.5
If the quotient is a whole number, then 2 and 6,553,260.5 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 | 13,106,521 | |
| -1 | -13,106,521 |
Now, we try dividing 13,106,521 by 3:
13,106,521 ÷ 3 = 4,368,840.3333
If the quotient is a whole number, then 3 and 4,368,840.3333 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 | 13,106,521 | |
| -1 | -13,106,521 |
Let's try dividing by 4:
13,106,521 ÷ 4 = 3,276,630.25
If the quotient is a whole number, then 4 and 3,276,630.25 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 | 13,106,521 | |
| -1 | 13,106,521 |
If you did it right, you will end up with this table:
| 1 | 29 | 31 | 61 | 239 | 899 | 1,769 | 1,891 | 6,931 | 7,409 | 14,579 | 54,839 | 214,861 | 422,791 | 451,949 | 13,106,521 |
| -1 | -29 | -31 | -61 | -239 | -899 | -1,769 | -1,891 | -6,931 | -7,409 | -14,579 | -54,839 | -214,861 | -422,791 | -451,949 | -13,106,521 |
Here are some more numbers to try:
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