21189500

素因数分解:

$2^2\times 5^3\times {\mathrm{42379}}^1$

素因数の和:42398

約数の個数: 24

約数和(自身を含む): 46278960

約数和(自身を除く): 25089460

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 42379, 84758, 169516, 211895, 423790, 847580, 1059475, 2118950, 4237900, 5297375, 10594750, 21189500]

約数ペア:

[(1, 21189500), (2, 10594750), (4, 5297375), (5, 4237900), (10, 2118950), (20, 1059475), (25, 847580), (50, 423790), (100, 211895), (125, 169516), (250, 84758), (500, 42379)]