21192507

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7823}}^1$

素因数の和:7879

約数の個数: 24

約数和(自身を含む): 35802624

約数和(自身を除く): 14610117

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 7823, 23469, 54761, 70407, 164283, 336389, 492849, 1009167, 2354723, 3027501, 7064169, 21192507]

約数ペア:

[(1, 21192507), (3, 7064169), (7, 3027501), (9, 2354723), (21, 1009167), (43, 492849), (63, 336389), (129, 164283), (301, 70407), (387, 54761), (903, 23469), (2709, 7823)]