19804521

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{3469}}^1$

素因数の和:3656

約数の個数: 16

約数和(自身を含む): 28981440

約数和(自身を除く): 9176919

約数列:

[1, 3, 11, 33, 173, 519, 1903, 3469, 5709, 10407, 38159, 114477, 600137, 1800411, 6601507, 19804521]

約数ペア:

[(1, 19804521), (3, 6601507), (11, 1800411), (33, 600137), (173, 114477), (519, 38159), (1903, 10407), (3469, 5709)]