39279280

素因数分解:

$2^4\times 5^1\times {\mathrm{490991}}^1$

素因数の和:491004

約数の個数: 20

約数和(自身を含む): 91324512

約数和(自身を除く): 52045232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 490991, 981982, 1963964, 2454955, 3927928, 4909910, 7855856, 9819820, 19639640, 39279280]

約数ペア:

[(1, 39279280), (2, 19639640), (4, 9819820), (5, 7855856), (8, 4909910), (10, 3927928), (16, 2454955), (20, 1963964), (40, 981982), (80, 490991)]