A:
Positive:
1 x 2211024355 x 4422048779 x 2798765139 x 1590665395 x 559753695 x 3181334027 x 5490510981 x 20135
Negative:
-1 x -221102435-5 x -44220487-79 x -2798765-139 x -1590665-395 x -559753-695 x -318133-4027 x -54905-10981 x -20135
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 221,102,435, 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 | 221,102,435 | |
| -1 | -221,102,435 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,102,435.
Example:
1 x 221,102,435 = 221,102,435
and
-1 x -221,102,435 = 221,102,435
Notice both answers equal 221,102,435
With that explanation out of the way, let's continue. Next, we take the number 221,102,435 and divide it by 2:
221,102,435 ÷ 2 = 110,551,217.5
If the quotient is a whole number, then 2 and 110,551,217.5 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 | 221,102,435 | |
| -1 | -221,102,435 |
Now, we try dividing 221,102,435 by 3:
221,102,435 ÷ 3 = 73,700,811.6667
If the quotient is a whole number, then 3 and 73,700,811.6667 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 | 221,102,435 | |
| -1 | -221,102,435 |
Let's try dividing by 4:
221,102,435 ÷ 4 = 55,275,608.75
If the quotient is a whole number, then 4 and 55,275,608.75 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 | 221,102,435 | |
| -1 | 221,102,435 |
If you did it right, you will end up with this table:
| 1 | 5 | 79 | 139 | 395 | 695 | 4,027 | 10,981 | 20,135 | 54,905 | 318,133 | 559,753 | 1,590,665 | 2,798,765 | 44,220,487 | 221,102,435 |
| -1 | -5 | -79 | -139 | -395 | -695 | -4,027 | -10,981 | -20,135 | -54,905 | -318,133 | -559,753 | -1,590,665 | -2,798,765 | -44,220,487 | -221,102,435 |
Here are some more numbers to try:
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