21831560

素因数分解:

$2^3\times 5^1\times {\mathrm{545789}}^1$

素因数の和:545800

約数の個数: 16

約数和(自身を含む): 49121100

約数和(自身を除く): 27289540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 545789, 1091578, 2183156, 2728945, 4366312, 5457890, 10915780, 21831560]

約数ペア:

[(1, 21831560), (2, 10915780), (4, 5457890), (5, 4366312), (8, 2728945), (10, 2183156), (20, 1091578), (40, 545789)]