20428617

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{8719}}^1$

素因数の和:8804

約数の個数: 16

約数和(自身を含む): 30136320

約数和(自身を除く): 9707703

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 8719, 26157, 95909, 287727, 619049, 1857147, 6809539, 20428617]

約数ペア:

[(1, 20428617), (3, 6809539), (11, 1857147), (33, 619049), (71, 287727), (213, 95909), (781, 26157), (2343, 8719)]