A:
Positive:
1 x 4202200455 x 840440097 x 6003143535 x 12006287281 x 14954451405 x 2990891967 x 2136359835 x 42727
Negative:
-1 x -420220045-5 x -84044009-7 x -60031435-35 x -12006287-281 x -1495445-1405 x -299089-1967 x -213635-9835 x -42727
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 420,220,045, 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 | 420,220,045 | |
| -1 | -420,220,045 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 420,220,045.
Example:
1 x 420,220,045 = 420,220,045
and
-1 x -420,220,045 = 420,220,045
Notice both answers equal 420,220,045
With that explanation out of the way, let's continue. Next, we take the number 420,220,045 and divide it by 2:
420,220,045 ÷ 2 = 210,110,022.5
If the quotient is a whole number, then 2 and 210,110,022.5 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 | 420,220,045 | |
| -1 | -420,220,045 |
Now, we try dividing 420,220,045 by 3:
420,220,045 ÷ 3 = 140,073,348.3333
If the quotient is a whole number, then 3 and 140,073,348.3333 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 | 420,220,045 | |
| -1 | -420,220,045 |
Let's try dividing by 4:
420,220,045 ÷ 4 = 105,055,011.25
If the quotient is a whole number, then 4 and 105,055,011.25 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 | 420,220,045 | |
| -1 | 420,220,045 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 281 | 1,405 | 1,967 | 9,835 | 42,727 | 213,635 | 299,089 | 1,495,445 | 12,006,287 | 60,031,435 | 84,044,009 | 420,220,045 |
| -1 | -5 | -7 | -35 | -281 | -1,405 | -1,967 | -9,835 | -42,727 | -213,635 | -299,089 | -1,495,445 | -12,006,287 | -60,031,435 | -84,044,009 | -420,220,045 |
Here are some more numbers to try:
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