方 根 : √0 = 0( 表 示 根 号 0 等 于 0, 下同) √1 = 1 √2 = 1
4142135623731 √3 = 1
73205080756888 √4 = 2 √5 = 2
23606797749979 √6 = 2
44948974278318 √7 = 2
64575131106459 √8 = 2
82842712474619 √9 = 3 √10 = 3
16227766016838 √11 = 3
3166247903554 √12 = 3
46410161513775 √13 = 3
60555127546399 √14 = 3
74165738677394 √15 = 3
87298334620742 √16 = 4 √17 = 4
12310562561766 √18 = 4
24264068711928 √19 = 4
35889894354067 √20 = 4
47213595499958 √21 = 4
58257569495584 √22 = 4
69041575982343 √23 = 4
79583152331272 √24 = 4
89897948556636 √25 = 5 √26 = 5
09901951359278 √27 = 5
19615242270663 √28 = 5
29150262212918 √29 = 5
3851648071345 √30 = 5
47722557505166 √31 = 5
56776436283002 √32 = 5
65685424949238 √33 = 5
74456264653803 √34 = 5
8309518948453 √35 = 5
91607978309962 √36 = 6 √37 = 6
08276253029822 √38 = 6
164414002