Q: How many factor pairs does 30 have?

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30,115,210,36,5

(15,2)(10,3)

(30,1)(15,2)(10,3)(6,5)

1,30 2,15 3,10 5,6

The factor pairs of 21 are:1, 213, 7Therefore, the number 21 has two pairs of positive integer factors.

Related questions

30,115,210,36,5

Sixteen factor pairs.

20 has 3 factor pairs. Pairs are (1,20), (2,10) and (9,9)

12 has 3 factor pairs and the pairs are (1,12), (2,6) and (3,4).

(30,1)(15,2)(10,3)(6,5)

24

(15,2)(10,3)

The positive integer factor pairs of 30 are (1, 30) , (2, 15), (3, 10), and (5, 6).

1&30 2&15 3&10 5&6

The factor pairs of 150 are 1*150, 2*75, 3*50, 5*30, 6*25, and 10*15

76 has 3 factor pairs: (1,76), (2,38), (4,19).

One pair: it's a prime number.