A:
Positive:
1 x 18802217 x 26860319 x 9895967 x 28063133 x 14137211 x 8911469 x 40091273 x 1477
Negative:
-1 x -1880221-7 x -268603-19 x -98959-67 x -28063-133 x -14137-211 x -8911-469 x -4009-1273 x -1477
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 1,880,221, 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 | 1,880,221 | |
| -1 | -1,880,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,880,221.
Example:
1 x 1,880,221 = 1,880,221
and
-1 x -1,880,221 = 1,880,221
Notice both answers equal 1,880,221
With that explanation out of the way, let's continue. Next, we take the number 1,880,221 and divide it by 2:
1,880,221 ÷ 2 = 940,110.5
If the quotient is a whole number, then 2 and 940,110.5 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 | 1,880,221 | |
| -1 | -1,880,221 |
Now, we try dividing 1,880,221 by 3:
1,880,221 ÷ 3 = 626,740.3333
If the quotient is a whole number, then 3 and 626,740.3333 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 | 1,880,221 | |
| -1 | -1,880,221 |
Let's try dividing by 4:
1,880,221 ÷ 4 = 470,055.25
If the quotient is a whole number, then 4 and 470,055.25 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 | 1,880,221 | |
| -1 | 1,880,221 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 67 | 133 | 211 | 469 | 1,273 | 1,477 | 4,009 | 8,911 | 14,137 | 28,063 | 98,959 | 268,603 | 1,880,221 |
| -1 | -7 | -19 | -67 | -133 | -211 | -469 | -1,273 | -1,477 | -4,009 | -8,911 | -14,137 | -28,063 | -98,959 | -268,603 | -1,880,221 |
Here are some more numbers to try:
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