39839920

素因数分解:

$2^4\times 5^1\times {\mathrm{497999}}^1$

素因数の和:498012

約数の個数: 20

約数和(自身を含む): 92628000

約数和(自身を除く): 52788080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 497999, 995998, 1991996, 2489995, 3983992, 4979990, 7967984, 9959980, 19919960, 39839920]

約数ペア:

[(1, 39839920), (2, 19919960), (4, 9959980), (5, 7967984), (8, 4979990), (10, 3983992), (16, 2489995), (20, 1991996), (40, 995998), (80, 497999)]