2² × 3² × 5 × 1231

Prime Factor Structure

Factorization String 2^2 × 3^2 × 5 × 1231

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 672,672

Proper Divisor Sum 451,092

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #221567 ← → #221581

1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 1,231 2,462 3,693 4,924 6,155 7,386 11,079 12,310 14,772 18,465 22,158 24,620 36,930 44,316 55,395 73,860 110,790 221,580

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

221,580 110,790 55,395 166,186 83,093 249,280 124,640 62,320 31,160 15,580 7,790 3,895 11,686 5,843 17,530 8,765 26,296 13,148 6,574 3,287 9,862 4,931 14,794 7,397 22,192 11,096 5,548 2,774 1,387 4,162 2,081 6,244 3,122 1,561 4,684 2,342 1,171 3,514 1,757 5,272 2,636 1,318 659 1,978 989 2,968 1,484 742 371 1,114 557 1,672 836 418 209 628 314 157 472 236

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