20409455

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{433}}^1\times {\mathrm{857}}^1$

素因数の和:1306

約数の個数: 16

約数和(自身を含む): 26810784

約数和(自身を除く): 6401329

約数列:

[1, 5, 11, 55, 433, 857, 2165, 4285, 4763, 9427, 23815, 47135, 371081, 1855405, 4081891, 20409455]

約数ペア:

[(1, 20409455), (5, 4081891), (11, 1855405), (55, 371081), (433, 47135), (857, 23815), (2165, 9427), (4285, 4763)]