tìm Ư[1936]
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bạn chỉ cần tìm xem 65 , 25 = 32 , 32 x 7 = 9 x 7 = 63 chia hết cho những số nào là ra được mà !
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Ư(4)= {-4;-2;-1;1;2;4}
Ư(-3)= {-3;-1;1;3}
Ư(12)={-12;-6;-4;-3;-2;-1;1;2;3;4;6;12}
Ư(-8)={-8;-4;-2;-1;1;2;4;8}
Ư(-6)={-6;-3;-2;-1;1;2;3;6}
Ư(-20)={-20;-10;-5;-4;-2;-1;1;2;4;5;10;20}
Ư(-10)={-10;-5;-2;-1;1;2;5;10}
Ư(-16)={-16;-8;-4;-2;-1;1;2;4;8;16}
![](https://rs.olm.vn/images/avt/0.png?1311)
\(Ư\left(144\right)=\left\{1,2,3,4,6,8,9,12,16,18,24,36,48,72,144\right\}\)
\(Ư\left(324\right)=\left\{1,2,3,4,6,9,12,18,27,36,54,81,108,162,324\right\}\)
\(Ư\left(576\right)=\left\{1,2,3,4,6,8,9,12,16,18,24,32,36,48,64,72,96,144,192,288,576\right\}\)
\(Ư\left(1024\right)=\left\{1,2,4,8,16,32,64,128,256,512,1024\right\}\)
\(Ư\left(1296\right)=\left\{1,2,3,4,6,8,9,12,16,24,27,36,48,54,72,81,108,144,162,216,324,432,648,1296\right\}\)
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Ư( - 8) = { -8;-4;-2;-1;1;2;4;8;}
Ư( -10 ) = { -10;-5;-2;-1;1;2;5;10 }
B(-4)= { -16 ; -12 ; -8 ; -4 ;0 }
Ư( 15 ) = { -15 ; -5; -3; -1;1;3;5;15}
Ư(-8)=(-1;1;-2;2;-4;4;-8;8)
Ư(-10)=(-1;1;-2;2;-5;5;-10;10)
B(-4)=(-4;4;-8;12)
Ư(15)=(-1;1;-2;2;-3;3;-5;5;-15;15)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ư(2) = {1 ; 2}
Ư(3) = {1; 3}
Ư(4) = {1 ; 2 ; 4}
Ư (5) = {1 ; 5}
a)U(2)={1;2}
b)U(3)={1;3}
c)U(4)={1;2;4}
d)U(5)={1;5} tick nha CHU MINH NGỌC
![](https://rs.olm.vn/images/avt/0.png?1311)
i: \(18=3^2\cdot2\)
=>\(Ư\left(18\right)=\left\{1;-1;2;-2;3;-3;6;-6;9;-9;18;-18\right\}\)
k: \(24=2^3\cdot3\)
=>\(Ư\left(-24\right)=Ư\left(24\right)=\left\{1;-1;2;-2;3;-3;4;-4;6;-6;8;-8;12;-12;24;-24\right\}\)
l: \(12=2^2\cdot3\)
=>\(Ư\left(12\right)=Ư\left(-12\right)=\left\{1;-1;2;-2;3;-3;4;-4;6;-6;12;-12\right\}\)
m: \(27=3^3\)
=>\(Ư\left(27\right)=\left\{1;-1;3;-3;9;-9;27;-27\right\}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
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