2² × 3² × 19 × 31

Prime Factor Structure

Factorization String 2^2 × 3^2 × 19 × 31

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 58,240

Proper Divisor Sum 37,036

Digit Sum / Digital Root 9 (Root: 9)

Adjacent Primes #21193 ← → #21211

1 2 3 4 6 9 12 18 19 31 36 38 57 62 76 93 114 124 171 186 228 279 342 372 558 589 684 1,116 1,178 1,767 2,356 3,534 5,301 7,068 10,602 21,204

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

21,204 10,602 5,301 15,904 7,952 3,976 1,988 994 497 1,492 746 373 1,120 560 280 140 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1

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