A:
Positive:
1 x 2105620517 x 3008029317 x 12386003119 x 1769429397 x 5303832779 x 757694457 x 472436749 x 31199
Negative:
-1 x -210562051-7 x -30080293-17 x -12386003-119 x -1769429-397 x -530383-2779 x -75769-4457 x -47243-6749 x -31199
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 210,562,051, 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 | 210,562,051 | |
| -1 | -210,562,051 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 210,562,051.
Example:
1 x 210,562,051 = 210,562,051
and
-1 x -210,562,051 = 210,562,051
Notice both answers equal 210,562,051
With that explanation out of the way, let's continue. Next, we take the number 210,562,051 and divide it by 2:
210,562,051 ÷ 2 = 105,281,025.5
If the quotient is a whole number, then 2 and 105,281,025.5 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 | 210,562,051 | |
| -1 | -210,562,051 |
Now, we try dividing 210,562,051 by 3:
210,562,051 ÷ 3 = 70,187,350.3333
If the quotient is a whole number, then 3 and 70,187,350.3333 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 | 210,562,051 | |
| -1 | -210,562,051 |
Let's try dividing by 4:
210,562,051 ÷ 4 = 52,640,512.75
If the quotient is a whole number, then 4 and 52,640,512.75 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 | 210,562,051 | |
| -1 | 210,562,051 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 397 | 2,779 | 4,457 | 6,749 | 31,199 | 47,243 | 75,769 | 530,383 | 1,769,429 | 12,386,003 | 30,080,293 | 210,562,051 |
| -1 | -7 | -17 | -119 | -397 | -2,779 | -4,457 | -6,749 | -31,199 | -47,243 | -75,769 | -530,383 | -1,769,429 | -12,386,003 | -30,080,293 | -210,562,051 |
Here are some more numbers to try:
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