3⁴ × 7 × 389

Prime Factor Structure

Factorization String 3^4 × 7 × 389

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 377,520

Proper Divisor Sum 156,957

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #220559 ← → #220573

1 3 7 9 21 27 63 81 189 389 567 1,167 2,723 3,501 8,169 10,503 24,507 31,509 73,521 220,563

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

220,563 661,690 330,845 992,536 496,268 248,134 124,067 372,202 186,101 558,304 279,152 139,576 69,788 34,894 17,447 52,342 26,171 78,514 39,257 117,772 58,886 29,443 88,330 44,165 132,496 66,248 33,124 16,562 8,281 24,844 12,422 6,211 18,634 9,317 27,952 13,976 6,988 3,494 1,747 5,242 2,621 7,864 3,932 1,966 983 2,950 1,475 4,426 2,213 6,640 3,320 1,660 830 415 1,246 623 1,870 935 2,806 1,403

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