What are the factors and prime factors of 3920?

The factors of 3920 are: 1 2 4 5 7 8 10 14 16 20 28 35 40 49 56 70 80 98 112 140 196 245 280 392 490 560 784 980 1960 3920.

The prime factors are: 2, 5, 7