20994905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{7129}}^1$

素因数の和:7184

約数の個数: 16

約数和(自身を含む): 27379200

約数和(自身を除く): 6384295

約数列:

[1, 5, 19, 31, 95, 155, 589, 2945, 7129, 35645, 135451, 220999, 677255, 1104995, 4198981, 20994905]

約数ペア:

[(1, 20994905), (5, 4198981), (19, 1104995), (31, 677255), (95, 220999), (155, 135451), (589, 35645), (2945, 7129)]