A:
Positive:
1 x 15569455 x 31138913 x 11976517 x 9158565 x 2395385 x 18317221 x 70451105 x 1409
Negative:
-1 x -1556945-5 x -311389-13 x -119765-17 x -91585-65 x -23953-85 x -18317-221 x -7045-1105 x -1409
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 1,556,945, 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 | 1,556,945 | |
| -1 | -1,556,945 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,556,945.
Example:
1 x 1,556,945 = 1,556,945
and
-1 x -1,556,945 = 1,556,945
Notice both answers equal 1,556,945
With that explanation out of the way, let's continue. Next, we take the number 1,556,945 and divide it by 2:
1,556,945 ÷ 2 = 778,472.5
If the quotient is a whole number, then 2 and 778,472.5 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 | 1,556,945 | |
| -1 | -1,556,945 |
Now, we try dividing 1,556,945 by 3:
1,556,945 ÷ 3 = 518,981.6667
If the quotient is a whole number, then 3 and 518,981.6667 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 | 1,556,945 | |
| -1 | -1,556,945 |
Let's try dividing by 4:
1,556,945 ÷ 4 = 389,236.25
If the quotient is a whole number, then 4 and 389,236.25 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 | 1,556,945 | |
| -1 | 1,556,945 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 17 | 65 | 85 | 221 | 1,105 | 1,409 | 7,045 | 18,317 | 23,953 | 91,585 | 119,765 | 311,389 | 1,556,945 |
| -1 | -5 | -13 | -17 | -65 | -85 | -221 | -1,105 | -1,409 | -7,045 | -18,317 | -23,953 | -91,585 | -119,765 | -311,389 | -1,556,945 |
Here are some more numbers to try:
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