21406959

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11717}}^1$

素因数の和:11759

約数の個数: 24

約数和(自身を含む): 36560160

約数和(自身を除く): 15153201

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11717, 35151, 82019, 105453, 246057, 339793, 738171, 1019379, 2378551, 3058137, 7135653, 21406959]

約数ペア:

[(1, 21406959), (3, 7135653), (7, 3058137), (9, 2378551), (21, 1019379), (29, 738171), (63, 339793), (87, 246057), (203, 105453), (261, 82019), (609, 35151), (1827, 11717)]