208017621

素因数分解:

$3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{21031}}^1$

素因数の和:21201

約数の個数: 24

約数和(自身を含む): 345597824

約数和(自身を除く): 137580203

約数列:

[1, 3, 7, 9, 21, 63, 157, 471, 1099, 1413, 3297, 9891, 21031, 63093, 147217, 189279, 441651, 1324953, 3301867, 9905601, 23113069, 29716803, 69339207, 208017621]

約数ペア:

[(1, 208017621), (3, 69339207), (7, 29716803), (9, 23113069), (21, 9905601), (63, 3301867), (157, 1324953), (471, 441651), (1099, 189279), (1413, 147217), (3297, 63093), (9891, 21031)]