21260547

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2789}}^1$

素因数の和:2824

約数の個数: 36

約数和(自身を含む): 38591280

約数和(自身を除く): 17330733

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 121, 231, 363, 693, 847, 1089, 2541, 2789, 7623, 8367, 19523, 25101, 30679, 58569, 92037, 175707, 214753, 276111, 337469, 644259, 1012407, 1932777, 2362283, 3037221, 7086849, 21260547]

約数ペア:

[(1, 21260547), (3, 7086849), (7, 3037221), (9, 2362283), (11, 1932777), (21, 1012407), (33, 644259), (63, 337469), (77, 276111), (99, 214753), (121, 175707), (231, 92037), (363, 58569), (693, 30679), (847, 25101), (1089, 19523), (2541, 8367), (2789, 7623)]