A:
Positive:
1 x 2103467311 x 191224323 x 91455171 x 296263253 x 83141781 x 269331171 x 179631633 x 12881
Negative:
-1 x -21034673-11 x -1912243-23 x -914551-71 x -296263-253 x -83141-781 x -26933-1171 x -17963-1633 x -12881
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 21,034,673, 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 | 21,034,673 | |
| -1 | -21,034,673 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 21,034,673.
Example:
1 x 21,034,673 = 21,034,673
and
-1 x -21,034,673 = 21,034,673
Notice both answers equal 21,034,673
With that explanation out of the way, let's continue. Next, we take the number 21,034,673 and divide it by 2:
21,034,673 ÷ 2 = 10,517,336.5
If the quotient is a whole number, then 2 and 10,517,336.5 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 | 21,034,673 | |
| -1 | -21,034,673 |
Now, we try dividing 21,034,673 by 3:
21,034,673 ÷ 3 = 7,011,557.6667
If the quotient is a whole number, then 3 and 7,011,557.6667 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 | 21,034,673 | |
| -1 | -21,034,673 |
Let's try dividing by 4:
21,034,673 ÷ 4 = 5,258,668.25
If the quotient is a whole number, then 4 and 5,258,668.25 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 | 21,034,673 | |
| -1 | 21,034,673 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 71 | 253 | 781 | 1,171 | 1,633 | 12,881 | 17,963 | 26,933 | 83,141 | 296,263 | 914,551 | 1,912,243 | 21,034,673 |
| -1 | -11 | -23 | -71 | -253 | -781 | -1,171 | -1,633 | -12,881 | -17,963 | -26,933 | -83,141 | -296,263 | -914,551 | -1,912,243 | -21,034,673 |
Here are some more numbers to try:
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