2² × 5 × 19819

Prime Factor Structure

Factorization String 2^2 × 5 × 19819

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 832,440

Proper Divisor Sum 436,060

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #396379 ← → #396413

1 2 4 5 10 20 19,819 39,638 79,276 99,095 198,190 396,380

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

396,380 198,190 99,095 297,286 148,643 445,930 222,965 668,896 334,448 167,224 83,612 41,806 20,903 62,710 31,355 94,066 47,033 141,100 70,550 35,275 105,826 52,913 158,740 79,370 39,685 119,056 59,528 29,764 14,882 7,441 22,324 11,162 5,581 16,744 8,372 4,186 2,093 6,280 3,140 1,570 785 2,356 1,178 589 1,768 884 442 221 664 332 166 83 250 125 376 188 94 47 142 71

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