2³ × 5 × 19681

Prime Factor Structure

Factorization String 2^3 × 5 × 19681

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,771,380

Proper Divisor Sum 984,140

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #787217 ← → #787243

1 2 4 5 8 10 20 40 19,681 39,362 78,724 98,405 157,448 196,810 393,620 787,240

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

787,240 393,620 196,810 98,405 295,216 147,608 73,804 36,902 18,451 55,354 27,677 83,032 41,516 20,758 10,379 31,138 15,569 46,708 23,354 11,677 35,032 17,516 8,758 4,379 13,138 6,569 19,708 9,854 4,927 14,782 7,391 22,174 11,087 33,262 16,631 49,894 24,947 74,842 37,421 112,264 56,132 28,066 14,033 42,100 21,050 10,525 31,576 15,788 7,894 3,947 11,842 5,921 17,764 8,882 4,441 13,324 6,662 3,331 9,994 4,997

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