3 × 7 × 19 × 971

Prime Factor Structure

Factorization String 3 × 7 × 19 × 971

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 622,080

Proper Divisor Sum 234,651

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #387403 ← → #387433

1 3 7 19 21 57 133 399 971 2,913 6,797 18,449 20,391 55,347 129,143 387,429

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

387,429 1,162,288 581,144 290,572 145,286 72,643 217,930 108,965 326,896 163,448 81,724 40,862 20,431 61,294 30,647 91,942 45,971 137,914 68,957 206,872 103,436 51,718 25,859 77,578 38,789 116,368 58,184 29,092 14,546 7,273 21,820 10,910 5,455 16,366 8,183 24,550 12,275 36,826 18,413 55,240 27,620 13,810 6,905 20,716 10,358 5,179 15,538 7,769 23,308 11,654 5,827 17,482 8,741 26,224 13,112 6,556 3,278 1,639 4,918 2,459

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