20971885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{3931}}^1$

素因数の和:4044

約数の個数: 16

約数和(自身を含む): 27744192

約数和(自身を除く): 6772307

約数列:

[1, 5, 11, 55, 97, 485, 1067, 3931, 5335, 19655, 43241, 216205, 381307, 1906535, 4194377, 20971885]

約数ペア:

[(1, 20971885), (5, 4194377), (11, 1906535), (55, 381307), (97, 216205), (485, 43241), (1067, 19655), (3931, 5335)]