A:
Positive:
1 x 2215755017 x 3165364317 x 1303385349 x 4521949119 x 1861979461 x 480641577 x 384013833 x 2659973227 x 686634039 x 548597837 x 282739809 x 22589
Negative:
-1 x -221575501-7 x -31653643-17 x -13033853-49 x -4521949-119 x -1861979-461 x -480641-577 x -384013-833 x -265997-3227 x -68663-4039 x -54859-7837 x -28273-9809 x -22589
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 221,575,501, 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 | 221,575,501 | |
| -1 | -221,575,501 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,575,501.
Example:
1 x 221,575,501 = 221,575,501
and
-1 x -221,575,501 = 221,575,501
Notice both answers equal 221,575,501
With that explanation out of the way, let's continue. Next, we take the number 221,575,501 and divide it by 2:
221,575,501 ÷ 2 = 110,787,750.5
If the quotient is a whole number, then 2 and 110,787,750.5 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 | 221,575,501 | |
| -1 | -221,575,501 |
Now, we try dividing 221,575,501 by 3:
221,575,501 ÷ 3 = 73,858,500.3333
If the quotient is a whole number, then 3 and 73,858,500.3333 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 | 221,575,501 | |
| -1 | -221,575,501 |
Let's try dividing by 4:
221,575,501 ÷ 4 = 55,393,875.25
If the quotient is a whole number, then 4 and 55,393,875.25 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 | 221,575,501 | |
| -1 | 221,575,501 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 49 | 119 | 461 | 577 | 833 | 3,227 | 4,039 | 7,837 | 9,809 | 22,589 | 28,273 | 54,859 | 68,663 | 265,997 | 384,013 | 480,641 | 1,861,979 | 4,521,949 | 13,033,853 | 31,653,643 | 221,575,501 |
| -1 | -7 | -17 | -49 | -119 | -461 | -577 | -833 | -3,227 | -4,039 | -7,837 | -9,809 | -22,589 | -28,273 | -54,859 | -68,663 | -265,997 | -384,013 | -480,641 | -1,861,979 | -4,521,949 | -13,033,853 | -31,653,643 | -221,575,501 |
Here are some more numbers to try:
Try the factor calculator