205901900

素因数分解:

$2^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{21227}}^1$

素因数の和:21338

約数の個数: 36

約数和(自身を含む): 451434648

約数和(自身を除く): 245532748

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 97, 100, 194, 388, 485, 970, 1940, 2425, 4850, 9700, 21227, 42454, 84908, 106135, 212270, 424540, 530675, 1061350, 2059019, 2122700, 4118038, 8236076, 10295095, 20590190, 41180380, 51475475, 102950950, 205901900]

約数ペア:

[(1, 205901900), (2, 102950950), (4, 51475475), (5, 41180380), (10, 20590190), (20, 10295095), (25, 8236076), (50, 4118038), (97, 2122700), (100, 2059019), (194, 1061350), (388, 530675), (485, 424540), (970, 212270), (1940, 106135), (2425, 84908), (4850, 42454), (9700, 21227)]