λ
Sigma Notebook

820,066

2 × 13 × 31541
Deficient Even Composite

820,066 is even and not a perfect square. Its factorization is 2 × 13 × 31541 and its 8 divisors sum to 1,324,764.

Prime Factor Structure

Factorization String 2 × 13 × 31541
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 1,324,764
Proper Divisor Sum 504,698
Digit Sum / Digital Root 22 (Root: 4)
Adjacent Primes #820051 ← → #820067

Radix Representation

Decimal 820066
Binary 11001000001101100010 (20 bits)
Octal 0o3101542
Hexadecimal 0xC8362

Divisor Catalog (8)

1 2 13 26 31,541 63,082 410,033 820,066

Collatz Trajectory (82 steps to reach 1)

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

820,066 410,033 1,230,100 615,050 307,525 922,576 461,288 230,644 115,322 57,661 172,984 86,492 43,246 21,623 64,870 32,435 97,306 48,653 145,960 72,980 36,490 18,245 54,736 27,368 13,684 6,842 3,421 10,264 5,132 2,566 1,283 3,850 1,925 5,776 2,888 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376 688 344 172 86 43 130 65 196 98 49 148

More profiles

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