289356820

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{149153}}^1$

素因数の和:149259

約数の個数: 24

約数和(自身を含む): 613917864

約数和(自身を除く): 324561044

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 149153, 298306, 596612, 745765, 1491530, 2983060, 14467841, 28935682, 57871364, 72339205, 144678410, 289356820]

約数ペア:

[(1, 289356820), (2, 144678410), (4, 72339205), (5, 57871364), (10, 28935682), (20, 14467841), (97, 2983060), (194, 1491530), (388, 745765), (485, 596612), (970, 298306), (1940, 149153)]