16686580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{19403}}^1$

素因数の和:19455

約数の個数: 24

約数和(自身を含む): 35858592

約数和(自身を除く): 19172012

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 19403, 38806, 77612, 97015, 194030, 388060, 834329, 1668658, 3337316, 4171645, 8343290, 16686580]

約数ペア:

[(1, 16686580), (2, 8343290), (4, 4171645), (5, 3337316), (10, 1668658), (20, 834329), (43, 388060), (86, 194030), (172, 97015), (215, 77612), (430, 38806), (860, 19403)]