20128496680

素因数分解:

$2^3\times 5^1\times {\mathrm{367}}^1\times {\mathrm{1371151}}^1$

素因数の和:1371529

約数の個数: 32

約数和(自身を含む): 45412554240

約数和(自身を除く): 25284057560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 367, 734, 1468, 1835, 2936, 3670, 7340, 14680, 1371151, 2742302, 5484604, 6855755, 10969208, 13711510, 27423020, 54846040, 503212417, 1006424834, 2012849668, 2516062085, 4025699336, 5032124170, 10064248340, 20128496680]

約数ペア:

[(1, 20128496680), (2, 10064248340), (4, 5032124170), (5, 4025699336), (8, 2516062085), (10, 2012849668), (20, 1006424834), (40, 503212417), (367, 54846040), (734, 27423020), (1468, 13711510), (1835, 10969208), (2936, 6855755), (3670, 5484604), (7340, 2742302), (14680, 1371151)]