12420009

素因数分解:

$3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1439}}^1$

素因数の和:1589

約数の個数: 24

約数和(自身を含む): 20666880

約数和(自身を除く): 8246871

約数列:

[1, 3, 7, 9, 21, 63, 137, 411, 959, 1233, 1439, 2877, 4317, 8631, 10073, 12951, 30219, 90657, 197143, 591429, 1380001, 1774287, 4140003, 12420009]

約数ペア:

[(1, 12420009), (3, 4140003), (7, 1774287), (9, 1380001), (21, 591429), (63, 197143), (137, 90657), (411, 30219), (959, 12951), (1233, 10073), (1439, 8631), (2877, 4317)]