20859981

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{1759}}^1$

素因数の和:1888

約数の個数: 16

約数和(自身を含む): 28723200

約数和(自身を除く): 7863219

約数列:

[1, 3, 59, 67, 177, 201, 1759, 3953, 5277, 11859, 103781, 117853, 311343, 353559, 6953327, 20859981]

約数ペア:

[(1, 20859981), (3, 6953327), (59, 353559), (67, 311343), (177, 117853), (201, 103781), (1759, 11859), (3953, 5277)]