19816660

素因数分解:

$2^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1259}}^1$

素因数の和:2055

約数の個数: 24

約数和(自身を含む): 41700960

約数和(自身を除く): 21884300

約数列:

[1, 2, 4, 5, 10, 20, 787, 1259, 1574, 2518, 3148, 3935, 5036, 6295, 7870, 12590, 15740, 25180, 990833, 1981666, 3963332, 4954165, 9908330, 19816660]

約数ペア:

[(1, 19816660), (2, 9908330), (4, 4954165), (5, 3963332), (10, 1981666), (20, 990833), (787, 25180), (1259, 15740), (1574, 12590), (2518, 7870), (3148, 6295), (3935, 5036)]