A:
Positive:
1 x 1962786111 x 178435153 x 370337131 x 149831257 x 76373583 x 336671441 x 136212827 x 6943
Negative:
-1 x -19627861-11 x -1784351-53 x -370337-131 x -149831-257 x -76373-583 x -33667-1441 x -13621-2827 x -6943
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 19,627,861, 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 | 19,627,861 | |
| -1 | -19,627,861 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,627,861.
Example:
1 x 19,627,861 = 19,627,861
and
-1 x -19,627,861 = 19,627,861
Notice both answers equal 19,627,861
With that explanation out of the way, let's continue. Next, we take the number 19,627,861 and divide it by 2:
19,627,861 ÷ 2 = 9,813,930.5
If the quotient is a whole number, then 2 and 9,813,930.5 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 | 19,627,861 | |
| -1 | -19,627,861 |
Now, we try dividing 19,627,861 by 3:
19,627,861 ÷ 3 = 6,542,620.3333
If the quotient is a whole number, then 3 and 6,542,620.3333 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 | 19,627,861 | |
| -1 | -19,627,861 |
Let's try dividing by 4:
19,627,861 ÷ 4 = 4,906,965.25
If the quotient is a whole number, then 4 and 4,906,965.25 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 | 19,627,861 | |
| -1 | 19,627,861 |
If you did it right, you will end up with this table:
| 1 | 11 | 53 | 131 | 257 | 583 | 1,441 | 2,827 | 6,943 | 13,621 | 33,667 | 76,373 | 149,831 | 370,337 | 1,784,351 | 19,627,861 |
| -1 | -11 | -53 | -131 | -257 | -583 | -1,441 | -2,827 | -6,943 | -13,621 | -33,667 | -76,373 | -149,831 | -370,337 | -1,784,351 | -19,627,861 |
Here are some more numbers to try:
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