20765689

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3631}}^1$

素因数の和:3700

約数の個数: 16

約数和(自身を含む): 25569280

約数和(自身を除く): 4803591

約数列:

[1, 7, 19, 43, 133, 301, 817, 3631, 5719, 25417, 68989, 156133, 482923, 1092931, 2966527, 20765689]

約数ペア:

[(1, 20765689), (7, 2966527), (19, 1092931), (43, 482923), (133, 156133), (301, 68989), (817, 25417), (3631, 5719)]