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3 is a factor, 18 is a multiple. Is it right or wrong
wrong
A number is not only a factor of 72, but also a multiple of 18. How many such numbers are there?
There are: 18,18 × 2,18 × 4
Namely
18,36,72.
There is a natural number, the sum of its two largest factors is 123, to find the natural number
123=1×3×41
123=41+82
The natural number is 82
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