21179356

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43759}}^1$

素因数の和:43785

約数の個数: 18

約数和(自身を含む): 40740560

約数和(自身を除く): 19561204

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43759, 87518, 175036, 481349, 962698, 1925396, 5294839, 10589678, 21179356]

約数ペア:

[(1, 21179356), (2, 10589678), (4, 5294839), (11, 1925396), (22, 962698), (44, 481349), (121, 175036), (242, 87518), (484, 43759)]