A:
Positive:
1 x 173572217 x 247960317 x 102101349 x 35422967 x 259063119 x 145859311 x 55811469 x 37009833 x 208371139 x 152392177 x 79733283 x 5287
Negative:
-1 x -17357221-7 x -2479603-17 x -1021013-49 x -354229-67 x -259063-119 x -145859-311 x -55811-469 x -37009-833 x -20837-1139 x -15239-2177 x -7973-3283 x -5287
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 17,357,221, 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 | 17,357,221 | |
| -1 | -17,357,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 17,357,221.
Example:
1 x 17,357,221 = 17,357,221
and
-1 x -17,357,221 = 17,357,221
Notice both answers equal 17,357,221
With that explanation out of the way, let's continue. Next, we take the number 17,357,221 and divide it by 2:
17,357,221 ÷ 2 = 8,678,610.5
If the quotient is a whole number, then 2 and 8,678,610.5 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 | 17,357,221 | |
| -1 | -17,357,221 |
Now, we try dividing 17,357,221 by 3:
17,357,221 ÷ 3 = 5,785,740.3333
If the quotient is a whole number, then 3 and 5,785,740.3333 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 | 17,357,221 | |
| -1 | -17,357,221 |
Let's try dividing by 4:
17,357,221 ÷ 4 = 4,339,305.25
If the quotient is a whole number, then 4 and 4,339,305.25 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 | 17,357,221 | |
| -1 | 17,357,221 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 49 | 67 | 119 | 311 | 469 | 833 | 1,139 | 2,177 | 3,283 | 5,287 | 7,973 | 15,239 | 20,837 | 37,009 | 55,811 | 145,859 | 259,063 | 354,229 | 1,021,013 | 2,479,603 | 17,357,221 |
| -1 | -7 | -17 | -49 | -67 | -119 | -311 | -469 | -833 | -1,139 | -2,177 | -3,283 | -5,287 | -7,973 | -15,239 | -20,837 | -37,009 | -55,811 | -145,859 | -259,063 | -354,229 | -1,021,013 | -2,479,603 | -17,357,221 |
Here are some more numbers to try:
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