19171780

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{6997}}^1$

素因数の和:7143

約数の個数: 24

約数和(自身を含む): 40560408

約数和(自身を除く): 21388628

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 6997, 13994, 27988, 34985, 69970, 139940, 958589, 1917178, 3834356, 4792945, 9585890, 19171780]

約数ペア:

[(1, 19171780), (2, 9585890), (4, 4792945), (5, 3834356), (10, 1917178), (20, 958589), (137, 139940), (274, 69970), (548, 34985), (685, 27988), (1370, 13994), (2740, 6997)]