21288795

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129023}}^1$

素因数の和:129042

約数の個数: 16

約数和(自身を含む): 37158912

約数和(自身を除く): 15870117

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 129023, 387069, 645115, 1419253, 1935345, 4257759, 7096265, 21288795]

約数ペア:

[(1, 21288795), (3, 7096265), (5, 4257759), (11, 1935345), (15, 1419253), (33, 645115), (55, 387069), (165, 129023)]