How to calculate SD knowing SE and N in R ?

I want to calculate SD knowing SE and N for every item in a vector, for example:

for a vector:

x1 <- c(12,24,47,20,20,25,28,41,20,14,16)
SE_mine <- c(10.64, 16.58, 12.02, 12.55, 7.85, 13.23, 10.57, 19.57, 10.94, 5.94,16.8)

How do I do that, please ? It looks pretty straigthforward, but I stuck with it.

Did you want

SD <- SE_mine * sqrt(x1)


Yes, thank you. That's it.

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