20557867

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 24579072

約数和(自身を除く): 4021205

約数列:

[1, 11, 19, 31, 167, 209, 341, 361, 589, 1837, 3173, 3971, 5177, 6479, 11191, 34903, 56947, 60287, 98363, 123101, 663157, 1081993, 1868897, 20557867]

約数ペア:

[(1, 20557867), (11, 1868897), (19, 1081993), (31, 663157), (167, 123101), (209, 98363), (341, 60287), (361, 56947), (589, 34903), (1837, 11191), (3173, 6479), (3971, 5177)]