20168743040

素因数分解:

$2^7\times 5^1\times {\mathrm{31513661}}^1$

素因数の和:31513680

約数の個数: 32

約数和(自身を含む): 48215902860

約数和(自身を除く): 28047159820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31513661, 63027322, 126054644, 157568305, 252109288, 315136610, 504218576, 630273220, 1008437152, 1260546440, 2016874304, 2521092880, 4033748608, 5042185760, 10084371520, 20168743040]

約数ペア:

[(1, 20168743040), (2, 10084371520), (4, 5042185760), (5, 4033748608), (8, 2521092880), (10, 2016874304), (16, 1260546440), (20, 1008437152), (32, 630273220), (40, 504218576), (64, 315136610), (80, 252109288), (128, 157568305), (160, 126054644), (320, 63027322), (640, 31513661)]