21489800

素因数分解:

$2^3\times 5^2\times {\mathrm{107449}}^1$

素因数の和:107465

約数の個数: 24

約数和(自身を含む): 49964250

約数和(自身を除く): 28474450

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 107449, 214898, 429796, 537245, 859592, 1074490, 2148980, 2686225, 4297960, 5372450, 10744900, 21489800]

約数ペア:

[(1, 21489800), (2, 10744900), (4, 5372450), (5, 4297960), (8, 2686225), (10, 2148980), (20, 1074490), (25, 859592), (40, 537245), (50, 429796), (100, 214898), (200, 107449)]