2² × 5 × 21019

Prime Factor Structure

Factorization String 2^2 × 5 × 21019

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 882,840

Proper Divisor Sum 462,460

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #420367 ← → #420383

1 2 4 5 10 20 21,019 42,038 84,076 105,095 210,190 420,380

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

420,380 210,190 105,095 315,286 157,643 472,930 236,465 709,396 354,698 177,349 532,048 266,024 133,012 66,506 33,253 99,760 49,880 24,940 12,470 6,235 18,706 9,353 28,060 14,030 7,015 21,046 10,523 31,570 15,785 47,356 23,678 11,839 35,518 17,759 53,278 26,639 79,918 39,959 119,878 59,939 179,818 89,909 269,728 134,864 67,432 33,716 16,858 8,429 25,288 12,644 6,322 3,161 9,484 4,742 2,371 7,114 3,557 10,672 5,336 2,668

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