1,801,982

2 × 7 × 13 × 9901

1,801,982 factors as 2 × 7 × 13 × 9901. Its 16 positive divisors give a proper-divisor sum of 1,525,090, so this integer is deficient. The Collatz stopping time is 140 steps.

Prime Factor Structure

Factorization String 2 × 7 × 13 × 9901

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,327,072

Proper Divisor Sum 1,525,090

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #1801967 ← → #1801997

Radix Representation

Decimal	1801982
Binary	110110111111011111110 (21 bits)
Octal	0o6677376
Hexadecimal	0x1B7EFE

Divisor Catalog (16)

1 2 7 13 14 26 91 182 9,901 19,802 69,307 128,713 138,614 257,426 900,991 1,801,982

Collatz Trajectory (140 steps to reach 1)

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

1,801,982 900,991 2,702,974 1,351,487 4,054,462 2,027,231 6,081,694 3,040,847 9,122,542 4,561,271 13,683,814 6,841,907 20,525,722 10,262,861 30,788,584 15,394,292 7,697,146 3,848,573 11,545,720 5,772,860 2,886,430 1,443,215 4,329,646 2,164,823 6,494,470 3,247,235 9,741,706 4,870,853 14,612,560 7,306,280 3,653,140 1,826,570 913,285 2,739,856 1,369,928 684,964 342,482 171,241 513,724 256,862 128,431 385,294 192,647 577,942 288,971 866,914 433,457 1,300,372 650,186 325,093 975,280 487,640 243,820 121,910 60,955 182,866 91,433 274,300 137,150 68,575

More profiles

Browse other published profiles and their separate link collections.

No other profiles in this collection.

← Previous Integer #1,801,981 Browse Full Index Next Integer #1,801,983 →