17991351

素因数分解:

$3^2\times 7^1\times {\mathrm{353}}^1\times {\mathrm{809}}^1$

素因数の和:1175

約数の個数: 24

約数和(自身を含む): 29820960

約数和(自身を除く): 11829609

約数列:

[1, 3, 7, 9, 21, 63, 353, 809, 1059, 2427, 2471, 3177, 5663, 7281, 7413, 16989, 22239, 50967, 285577, 856731, 1999039, 2570193, 5997117, 17991351]

約数ペア:

[(1, 17991351), (3, 5997117), (7, 2570193), (9, 1999039), (21, 856731), (63, 285577), (353, 50967), (809, 22239), (1059, 16989), (2427, 7413), (2471, 7281), (3177, 5663)]