21355411

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1327}}^1$

素因数の和:1375

約数の個数: 24

約数和(自身を含む): 28259840

約数和(自身を除く): 6904429

約数列:

[1, 7, 11, 19, 77, 121, 133, 209, 847, 1327, 1463, 2299, 9289, 14597, 16093, 25213, 102179, 160567, 176491, 277343, 1123969, 1941401, 3050773, 21355411]

約数ペア:

[(1, 21355411), (7, 3050773), (11, 1941401), (19, 1123969), (77, 277343), (121, 176491), (133, 160567), (209, 102179), (847, 25213), (1327, 16093), (1463, 14597), (2299, 9289)]