20778959

素因数分解:

${\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1$

素因数の和:398

約数の個数: 16

約数和(自身を含む): 22646784

約数和(自身を除く): 1867825

約数列:

[1, 23, 31, 151, 193, 713, 3473, 4439, 4681, 5983, 29143, 107663, 137609, 670289, 903433, 20778959]

約数ペア:

[(1, 20778959), (23, 903433), (31, 670289), (151, 137609), (193, 107663), (713, 29143), (3473, 5983), (4439, 4681)]