19708820

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7193}}^1$

素因数の和:7339

約数の個数: 24

約数和(自身を含む): 41696424

約数和(自身を除く): 21987604

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7193, 14386, 28772, 35965, 71930, 143860, 985441, 1970882, 3941764, 4927205, 9854410, 19708820]

約数ペア:

[(1, 19708820), (2, 9854410), (4, 4927205), (5, 3941764), (10, 1970882), (20, 985441), (137, 143860), (274, 71930), (548, 35965), (685, 28772), (1370, 14386), (2740, 7193)]