20122389

素因数分解:

$3^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{443}}^1$

素因数の和:566

約数の個数: 36

約数和(自身を含む): 34216416

約数和(自身を除く): 14094027

約数列:

[1, 3, 7, 9, 21, 49, 63, 103, 147, 309, 441, 443, 721, 927, 1329, 2163, 3101, 3987, 5047, 6489, 9303, 15141, 21707, 27909, 45423, 45629, 65121, 136887, 195363, 319403, 410661, 958209, 2235821, 2874627, 6707463, 20122389]

約数ペア:

[(1, 20122389), (3, 6707463), (7, 2874627), (9, 2235821), (21, 958209), (49, 410661), (63, 319403), (103, 195363), (147, 136887), (309, 65121), (441, 45629), (443, 45423), (721, 27909), (927, 21707), (1329, 15141), (2163, 9303), (3101, 6489), (3987, 5047)]