21195400

素因数分解:

$2^3\times 5^2\times {\mathrm{105977}}^1$

素因数の和:105993

約数の個数: 24

約数和(自身を含む): 49279770

約数和(自身を除く): 28084370

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 105977, 211954, 423908, 529885, 847816, 1059770, 2119540, 2649425, 4239080, 5298850, 10597700, 21195400]

約数ペア:

[(1, 21195400), (2, 10597700), (4, 5298850), (5, 4239080), (8, 2649425), (10, 2119540), (20, 1059770), (25, 847816), (40, 529885), (50, 423908), (100, 211954), (200, 105977)]