18697707

素因数分解:

$3^2\times 7^1\times {\mathrm{449}}^1\times {\mathrm{661}}^1$

素因数の和:1123

約数の個数: 24

約数和(自身を含む): 30981600

約数和(自身を除く): 12283893

約数列:

[1, 3, 7, 9, 21, 63, 449, 661, 1347, 1983, 3143, 4041, 4627, 5949, 9429, 13881, 28287, 41643, 296789, 890367, 2077523, 2671101, 6232569, 18697707]

約数ペア:

[(1, 18697707), (3, 6232569), (7, 2671101), (9, 2077523), (21, 890367), (63, 296789), (449, 41643), (661, 28287), (1347, 13881), (1983, 9429), (3143, 5949), (4041, 4627)]