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Factors of 428

"Factors of a Number" Calculator

What are the Factors of 428?

Answer

Factors of 428:

1, 2, 4, 107, 214, 428

6 factors · 428 = 2² × 107 · composite

Underlined — prime: 2, 107 · 1 — neither prime nor composite · others — composite

Factor pairs of 428

3 pairs: 1 × 428 · 2 × 214 · 4 × 107

Past √428 ≈ 20.69 every pair would repeat one already found — so checking stops at 20.

428 = 2² × 107 → (2 + 1) × (1 + 1) = 6 factors: add 1 to each exponent and multiply.

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See Also

Prime Number Checker - Find out whether a given number is Prime or not
Prime Factorization - Prime Factorization Calculator
Prime Numbers List - List of all Prime Numbers - how many Prime numbers are between

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Factors of 428. Factors of 428: full list and factor pairs.

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Factors Table

Number	Factors
413	1, 7, 59, 413
414	1, 2, 3, 6, 9, 18, 23, 46, 69, 138, 207, 414
415	1, 5, 83, 415
416	1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416
417	1, 3, 139, 417
418	1, 2, 11, 19, 22, 38, 209, 418
419	1, 419
420	1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
421	1, 421
422	1, 2, 211, 422
423	1, 3, 9, 47, 141, 423
424	1, 2, 4, 8, 53, 106, 212, 424
425	1, 5, 17, 25, 85, 425
426	1, 2, 3, 6, 71, 142, 213, 426
427	1, 7, 61, 427
428	1, 2, 4, 107, 214, 428
429	1, 3, 11, 13, 33, 39, 143, 429
430	1, 2, 5, 10, 43, 86, 215, 430
431	1, 431
432	1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 216, 432
433	1, 433
434	1, 2, 7, 14, 31, 62, 217, 434
435	1, 3, 5, 15, 29, 87, 145, 435
436	1, 2, 4, 109, 218, 436
437	1, 19, 23, 437
438	1, 2, 3, 6, 73, 146, 219, 438
439	1, 439
440	1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440
441	1, 3, 7, 9, 21, 49, 63, 147, 441
442	1, 2, 13, 17, 26, 34, 221, 442

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FAQ

What are the Factors of 428?

Factors of 428: 1, 2, 4, 107, 214, 428

How many factors does 428 have?

Number 428 has 6 factors

How many Factor Pairs does 428 have?

Number 428 has 3 factor pairs

Is 428 a prime or composite number?

Composite: 428 = 2² × 107, so it has 6 factors — a prime has exactly two.

How many factors does 428 have excluding 1 and 428?

4: 2, 4, 107 and 214.