Take your pick:
1 x 256 = 256
2 x 128 = 256
4 x 64 = 128
8 x 32 = 256
16 x 16 = 256
(Also, for each pair of factors above, they can be both negative, eg -4 x -64 = 256.)
Chat with our AI personalities
To find the number that, when multiplied by itself 4 times, equals 256, you need to find the fourth root of 256. The fourth root is the number that, when multiplied by itself four times, gives you 256. In this case, the fourth root of 256 is 4, because 4 x 4 x 4 x 4 equals 256. Therefore, the number you are looking for is 4.
A quarter of 256 is 64, no matter what subject or what language you do it in.
(512,-1)(256,-2)(128,-4)(64,-8)(32,-16)(-512,1)(-256,2)(-128,4)(-64,8)(-32,16)
65,536 = 256 x 256 = 256²
-256