PROBLEM
First, check if the number is 1. If it is, print 1.
Otherwise, maintain a variable i and set it to 0. While n is not 1, we need to increment i by 1. We need to change n to \dfrac{n}{i} (we divide n each time after we increase i). Then print the final i.
Implementation is simple.
for t in range(int(input())):
i = 0
n = int(input())
if n is 1:
print("1")
else:
while (n != 1):
i += 1
n /= i
print(i)