20789285

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{877}}^1$

素因数の和:1324

約数の個数: 16

約数和(自身を含む): 27309312

約数和(自身を除く): 6520027

約数列:

[1, 5, 11, 55, 431, 877, 2155, 4385, 4741, 9647, 23705, 48235, 377987, 1889935, 4157857, 20789285]

約数ペア:

[(1, 20789285), (5, 4157857), (11, 1889935), (55, 377987), (431, 48235), (877, 23705), (2155, 9647), (4385, 4741)]