20920405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{8093}}^1$

素因数の和:8156

約数の個数: 16

約数和(自身を含む): 27972864

約数和(自身を除く): 7052459

約数列:

[1, 5, 11, 47, 55, 235, 517, 2585, 8093, 40465, 89023, 380371, 445115, 1901855, 4184081, 20920405]

約数ペア:

[(1, 20920405), (5, 4184081), (11, 1901855), (47, 445115), (55, 380371), (235, 89023), (517, 40465), (2585, 8093)]