21043180

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{10847}}^1$

素因数の和:10953

約数の個数: 24

約数和(自身を含む): 44650368

約数和(自身を除く): 23607188

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 10847, 21694, 43388, 54235, 108470, 216940, 1052159, 2104318, 4208636, 5260795, 10521590, 21043180]

約数ペア:

[(1, 21043180), (2, 10521590), (4, 5260795), (5, 4208636), (10, 2104318), (20, 1052159), (97, 216940), (194, 108470), (388, 54235), (485, 43388), (970, 21694), (1940, 10847)]