Factors of 1980
2026-02-28 01:09 Diff

The factor tree is the graphical representation of breaking down any number into prime factors. The following step shows 

Step 1: Firstly, 1980 is divided by 2 to get 990.

Step 2: Now divide 990 by 2 to get 495.

Step 3: Then divide 495 by 3 to get 165.

Step 4: Divide 165 by 3 to get 55.

Step 5: Divide 55 by 5 to get 11. Here, 11 is the smallest prime number, that cannot be divided anymore.

So, the prime factorization of 1980 is: 2² × 3² × 5 × 11.

Factor Pairs Two numbers that are multiplied to give a specific number are called factor pairs. Both positive and negative factors constitute factor pairs.

Positive factor pairs of 1980: (1, 1980), (2, 990), (3, 660), (4, 495), (5, 396), (6, 330), (9, 220), (10, 198), (11, 180), (12, 165), (15, 132), (18, 110), (20, 99), (22, 90), (30, 66), (33, 60), (36, 55), (44, 45).

Negative factor pairs of 1980: (-1, -1980), (-2, -990), (-3, -660), (-4, -495), (-5, -396), (-6, -330), (-9, -220), (-10, -198), (-11, -180), (-12, -165), (-15, -132), (-18, -110), (-20, -99), (-22, -90), (-30, -66), (-33, -60), (-36, -55), (-44, -45).