20912129

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{673}}^1$

素因数の和:896

約数の個数: 16

約数和(自身を含む): 25105152

約数和(自身を除く): 4193023

約数列:

[1, 7, 23, 161, 193, 673, 1351, 4439, 4711, 15479, 31073, 108353, 129889, 909223, 2987447, 20912129]

約数ペア:

[(1, 20912129), (7, 2987447), (23, 909223), (161, 129889), (193, 108353), (673, 31073), (1351, 15479), (4439, 4711)]