20,021,425

5² × 157 × 5101

20,021,425 factors as 5^2 × 157 × 5101. Its 12 positive divisors give a proper-divisor sum of 4,968,171, so this integer is deficient. The Collatz stopping time is 190 steps.

Prime Factor Structure

Factorization String 5^2 × 157 × 5101

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 24,989,596

Proper Divisor Sum 4,968,171

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #20021413 ← → #20021429

Radix Representation

Decimal	20021425
Binary	1001100011000000010110001 (25 bits)
Octal	0o114300261
Hexadecimal	0x13180B1

Divisor Catalog (12)

1 5 25 157 785 3,925 5,101 25,505 127,525 800,857 4,004,285 20,021,425

Collatz Trajectory (190 steps to reach 1)

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

20,021,425 60,064,276 30,032,138 15,016,069 45,048,208 22,524,104 11,262,052 5,631,026 2,815,513 8,446,540 4,223,270 2,111,635 6,334,906 3,167,453 9,502,360 4,751,180 2,375,590 1,187,795 3,563,386 1,781,693 5,345,080 2,672,540 1,336,270 668,135 2,004,406 1,002,203 3,006,610 1,503,305 4,509,916 2,254,958 1,127,479 3,382,438 1,691,219 5,073,658 2,536,829 7,610,488 3,805,244 1,902,622 951,311 2,853,934 1,426,967 4,280,902 2,140,451 6,421,354 3,210,677 9,632,032 4,816,016 2,408,008 1,204,004 602,002 301,001 903,004 451,502 225,751 677,254 338,627 1,015,882 507,941 1,523,824 761,912

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