18786957

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^2\times {\mathrm{257}}^1$

素因数の和:385

約数の個数: 24

約数和(自身を含む): 29234496

約数和(自身を除く): 10447539

約数列:

[1, 3, 7, 21, 59, 177, 257, 413, 771, 1239, 1799, 3481, 5397, 10443, 15163, 24367, 45489, 73101, 106141, 318423, 894617, 2683851, 6262319, 18786957]

約数ペア:

[(1, 18786957), (3, 6262319), (7, 2683851), (21, 894617), (59, 318423), (177, 106141), (257, 73101), (413, 45489), (771, 24367), (1239, 15163), (1799, 10443), (3481, 5397)]