21181400

素因数分解:

$2^3\times 5^2\times {\mathrm{105907}}^1$

素因数の和:105923

約数の個数: 24

約数和(自身を含む): 49247220

約数和(自身を除く): 28065820

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 105907, 211814, 423628, 529535, 847256, 1059070, 2118140, 2647675, 4236280, 5295350, 10590700, 21181400]

約数ペア:

[(1, 21181400), (2, 10590700), (4, 5295350), (5, 4236280), (8, 2647675), (10, 2118140), (20, 1059070), (25, 847256), (40, 529535), (50, 423628), (100, 211814), (200, 105907)]