31428080

素因数分解:

$2^4\times 5^1\times {\mathrm{392851}}^1$

素因数の和:392864

約数の個数: 20

約数和(自身を含む): 73070472

約数和(自身を除く): 41642392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392851, 785702, 1571404, 1964255, 3142808, 3928510, 6285616, 7857020, 15714040, 31428080]

約数ペア:

[(1, 31428080), (2, 15714040), (4, 7857020), (5, 6285616), (8, 3928510), (10, 3142808), (16, 1964255), (20, 1571404), (40, 785702), (80, 392851)]