20821283

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1759}}^1$

素因数の和:1874

約数の個数: 16

約数和(自身を含む): 25344000

約数和(自身を除く): 4522717

約数列:

[1, 7, 19, 89, 133, 623, 1691, 1759, 11837, 12313, 33421, 156551, 233947, 1095857, 2974469, 20821283]

約数ペア:

[(1, 20821283), (7, 2974469), (19, 1095857), (89, 233947), (133, 156551), (623, 33421), (1691, 12313), (1759, 11837)]