A:
Positive:
1 x 15616797 x 22309729 x 5385149 x 31871157 x 9947203 x 7693343 x 45531099 x 1421
Negative:
-1 x -1561679-7 x -223097-29 x -53851-49 x -31871-157 x -9947-203 x -7693-343 x -4553-1099 x -1421
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 1,561,679, 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 | 1,561,679 | |
| -1 | -1,561,679 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,561,679.
Example:
1 x 1,561,679 = 1,561,679
and
-1 x -1,561,679 = 1,561,679
Notice both answers equal 1,561,679
With that explanation out of the way, let's continue. Next, we take the number 1,561,679 and divide it by 2:
1,561,679 ÷ 2 = 780,839.5
If the quotient is a whole number, then 2 and 780,839.5 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 | 1,561,679 | |
| -1 | -1,561,679 |
Now, we try dividing 1,561,679 by 3:
1,561,679 ÷ 3 = 520,559.6667
If the quotient is a whole number, then 3 and 520,559.6667 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 | 1,561,679 | |
| -1 | -1,561,679 |
Let's try dividing by 4:
1,561,679 ÷ 4 = 390,419.75
If the quotient is a whole number, then 4 and 390,419.75 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 | 1,561,679 | |
| -1 | 1,561,679 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 49 | 157 | 203 | 343 | 1,099 | 1,421 | 4,553 | 7,693 | 9,947 | 31,871 | 53,851 | 223,097 | 1,561,679 |
| -1 | -7 | -29 | -49 | -157 | -203 | -343 | -1,099 | -1,421 | -4,553 | -7,693 | -9,947 | -31,871 | -53,851 | -223,097 | -1,561,679 |
Here are some more numbers to try:
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