Factors of 1620 are numbers that, when multiplied in pairs give the product as 1620. There are 30 factors of 1620 of which 1620 itself is the biggest factor and its prime factors are 2, 3, 5 The Prime Factorization of 1620 is 2² × 3⁴ × 5¹.

• All Factors of 1620: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810 and 1620
• Prime Factors of 1620: 2, 3, 5
• Prime Factorization of 1620: 2² × 3⁴ × 5¹
• Sum of Factors of 1620: 5082

1.	What Are the Factors of 1620?
2.	Factors of 1620 by Prime Factorization
3.	Factors of 1620 in Pairs
4.	FAQs on Factors of 1620

Factors of 1620 are pairs of those numbers whose products result in 1620. These factors are either prime numbers or composite numbers.

How to Find the Factors of 1620?

To find the factors of 1620, we will have to find the list of numbers that would divide 1620 without leaving any remainder.

• 1620/1 = 1620; therefore, 1 is a factor of 1620.
• 1620/270 = 6; therefore, 270 is a factor of 1620.

Similarly we can find other factors. Hence, the factors of 1620 are 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620.

☛ Also Check:

• Factors of 20 - The factors of 20 are 1, 2, 4, 5, 10, 20
• Factors of 57 - The factors of 57 are 1, 3, 19, 57
• Factors of 15 - The factors of 15 are 1, 3, 5, 15
• Factors of 55 - The factors of 55 are 1, 5, 11, 55
• Factors of 22 - The factors of 22 are 1, 2, 11, 22

The number 1620 is composite and therefore it will have prime factors. Now let us learn how to calculate the prime factors of 1620. The first step is to divide the number 1620 with the smallest prime factor, here it is 2. We keep dividing until it gives a non-zero remainder.

• 1620 ÷ 2 = 810
• 810 ÷ 2 = 405

Further dividing 405 by 2 gives a non-zero remainder. So we stop the process and continue dividing the number 405 by the next smallest prime factor. We stop ultimately if the next prime factor doesn't exist or when we can't divide any further.

So, the prime factorization of 1620 can be written as 2² × 3⁴ × 5¹ where 2, 3, 5 are prime.

Pair factors of 1620 are the pairs of numbers that when multiplied give the product 1620. The factors of 1620 in pairs are:

• 1 × 1620 = (1, 1620)
• 2 × 810 = (2, 810)
• 3 × 540 = (3, 540)
• 4 × 405 = (4, 405)
• 5 × 324 = (5, 324)
• 6 × 270 = (6, 270)
• 9 × 180 = (9, 180)
• 10 × 162 = (10, 162)
• 12 × 135 = (12, 135)
• 15 × 108 = (15, 108)
• 18 × 90 = (18, 90)
• 20 × 81 = (20, 81)
• 27 × 60 = (27, 60)
• 30 × 54 = (30, 54)
• 36 × 45 = (36, 45)

Negative pair factors of 1620 are:

• -1 × -1620 = (-1, -1620)
• -2 × -810 = (-2, -810)
• -3 × -540 = (-3, -540)
• -4 × -405 = (-4, -405)
• -5 × -324 = (-5, -324)
• -6 × -270 = (-6, -270)
• -9 × -180 = (-9, -180)
• -10 × -162 = (-10, -162)
• -12 × -135 = (-12, -135)
• -15 × -108 = (-15, -108)
• -18 × -90 = (-18, -90)
• -20 × -81 = (-20, -81)
• -27 × -60 = (-27, -60)
• -30 × -54 = (-30, -54)
• -36 × -45 = (-36, -45)

NOTE: If (a, b) is a pair factor of a number then (b, a) is also a pair factor of that number.