198917900

素因数分解:

$2^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{20507}}^1$

素因数の和:20618

約数の個数: 36

約数和(自身を含む): 436123128

約数和(自身を除く): 237205228

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 97, 100, 194, 388, 485, 970, 1940, 2425, 4850, 9700, 20507, 41014, 82028, 102535, 205070, 410140, 512675, 1025350, 1989179, 2050700, 3978358, 7956716, 9945895, 19891790, 39783580, 49729475, 99458950, 198917900]

約数ペア:

[(1, 198917900), (2, 99458950), (4, 49729475), (5, 39783580), (10, 19891790), (20, 9945895), (25, 7956716), (50, 3978358), (97, 2050700), (100, 1989179), (194, 1025350), (388, 512675), (485, 410140), (970, 205070), (1940, 102535), (2425, 82028), (4850, 41014), (9700, 20507)]