80805460

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{20509}}^1$

素因数の和:20715

約数の個数: 24

約数和(自身を含む): 170561160

約数和(自身を除く): 89755700

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 20509, 41018, 82036, 102545, 205090, 410180, 4040273, 8080546, 16161092, 20201365, 40402730, 80805460]

約数ペア:

[(1, 80805460), (2, 40402730), (4, 20201365), (5, 16161092), (10, 8080546), (20, 4040273), (197, 410180), (394, 205090), (788, 102545), (985, 82036), (1970, 41018), (3940, 20509)]