20606901

素因数分解:

$3^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{1361}}^1$

素因数の和:1481

約数の個数: 24

約数和(自身を含む): 32295744

約数和(自身を除く): 11688843

約数列:

[1, 3, 7, 21, 49, 103, 147, 309, 721, 1361, 2163, 4083, 5047, 9527, 15141, 28581, 66689, 140183, 200067, 420549, 981281, 2943843, 6868967, 20606901]

約数ペア:

[(1, 20606901), (3, 6868967), (7, 2943843), (21, 981281), (49, 420549), (103, 200067), (147, 140183), (309, 66689), (721, 28581), (1361, 15141), (2163, 9527), (4083, 5047)]