2,680,390

2 × 5 × 17 × 15767

2,680,390 factors as 2 × 5 × 17 × 15767. Its 16 positive divisors give a proper-divisor sum of 2,428,442, so this integer is deficient. The Collatz stopping time is 94 steps.

Prime Factor Structure

Factorization String 2 × 5 × 17 × 15767

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 5,108,832

Proper Divisor Sum 2,428,442

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #2680367 ← → #2680393

Radix Representation

Decimal	2680390
Binary	1010001110011001000110 (22 bits)
Octal	0o12163106
Hexadecimal	0x28E646

Divisor Catalog (16)

1 2 5 10 17 34 85 170 15,767 31,534 78,835 157,670 268,039 536,078 1,340,195 2,680,390

Collatz Trajectory (94 steps to reach 1)

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

2,680,390 1,340,195 4,020,586 2,010,293 6,030,880 3,015,440 1,507,720 753,860 376,930 188,465 565,396 282,698 141,349 424,048 212,024 106,012 53,006 26,503 79,510 39,755 119,266 59,633 178,900 89,450 44,725 134,176 67,088 33,544 16,772 8,386 4,193 12,580 6,290 3,145 9,436 4,718 2,359 7,078 3,539 10,618 5,309 15,928 7,964 3,982 1,991 5,974 2,987 8,962 4,481 13,444 6,722 3,361 10,084 5,042 2,521 7,564 3,782 1,891 5,674 2,837

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