2² × 5² × 6563

Prime Factor Structure

Factorization String 2^2 × 5^2 × 6563

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 1,424,388

Proper Divisor Sum 768,088

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #656297 ← → #656303

1 2 4 5 10 20 25 50 100 6,563 13,126 26,252 32,815 65,630 131,260 164,075 328,150 656,300

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

656,300 328,150 164,075 492,226 246,113 738,340 369,170 184,585 553,756 276,878 138,439 415,318 207,659 622,978 311,489 934,468 467,234 233,617 700,852 350,426 175,213 525,640 262,820 131,410 65,705 197,116 98,558 49,279 147,838 73,919 221,758 110,879 332,638 166,319 498,958 249,479 748,438 374,219 1,122,658 561,329 1,683,988 841,994 420,997 1,262,992 631,496 315,748 157,874 78,937 236,812 118,406 59,203 177,610 88,805 266,416 133,208 66,604 33,302 16,651 49,954 24,977

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