20806676

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42989}}^1$

素因数の和:43015

約数の個数: 18

約数和(自身を含む): 40023690

約数和(自身を除く): 19217014

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42989, 85978, 171956, 472879, 945758, 1891516, 5201669, 10403338, 20806676]

約数ペア:

[(1, 20806676), (2, 10403338), (4, 5201669), (11, 1891516), (22, 945758), (44, 472879), (121, 171956), (242, 85978), (484, 42989)]