127456640

素因数分解:

$2^7\times 5^1\times {\mathrm{199151}}^1$

素因数の和:199170

約数の個数: 32

約数和(自身を含む): 304702560

約数和(自身を除く): 177245920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 199151, 398302, 796604, 995755, 1593208, 1991510, 3186416, 3983020, 6372832, 7966040, 12745664, 15932080, 25491328, 31864160, 63728320, 127456640]

約数ペア:

[(1, 127456640), (2, 63728320), (4, 31864160), (5, 25491328), (8, 15932080), (10, 12745664), (16, 7966040), (20, 6372832), (32, 3983020), (40, 3186416), (64, 1991510), (80, 1593208), (128, 995755), (160, 796604), (320, 398302), (640, 199151)]