A:
Positive:
1 x 2064005517 x 2948579323 x 8973937161 x 1281991683 x 3021971877 x 1099634781 x 4317113139 x 15709
Negative:
-1 x -206400551-7 x -29485793-23 x -8973937-161 x -1281991-683 x -302197-1877 x -109963-4781 x -43171-13139 x -15709
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 206,400,551, 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 | 206,400,551 | |
| -1 | -206,400,551 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 206,400,551.
Example:
1 x 206,400,551 = 206,400,551
and
-1 x -206,400,551 = 206,400,551
Notice both answers equal 206,400,551
With that explanation out of the way, let's continue. Next, we take the number 206,400,551 and divide it by 2:
206,400,551 ÷ 2 = 103,200,275.5
If the quotient is a whole number, then 2 and 103,200,275.5 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 | 206,400,551 | |
| -1 | -206,400,551 |
Now, we try dividing 206,400,551 by 3:
206,400,551 ÷ 3 = 68,800,183.6667
If the quotient is a whole number, then 3 and 68,800,183.6667 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 | 206,400,551 | |
| -1 | -206,400,551 |
Let's try dividing by 4:
206,400,551 ÷ 4 = 51,600,137.75
If the quotient is a whole number, then 4 and 51,600,137.75 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 | 206,400,551 | |
| -1 | 206,400,551 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 683 | 1,877 | 4,781 | 13,139 | 15,709 | 43,171 | 109,963 | 302,197 | 1,281,991 | 8,973,937 | 29,485,793 | 206,400,551 |
| -1 | -7 | -23 | -161 | -683 | -1,877 | -4,781 | -13,139 | -15,709 | -43,171 | -109,963 | -302,197 | -1,281,991 | -8,973,937 | -29,485,793 | -206,400,551 |
Here are some more numbers to try:
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