18405280371

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1\times {\mathrm{3221}}^1$

素因数の和:3627

約数の個数: 32

約数和(自身を含む): 25202741760

約数和(自身を除く): 6797461389

約数列:

[1, 3, 71, 139, 193, 213, 417, 579, 3221, 9663, 9869, 13703, 26827, 29607, 41109, 80481, 228691, 447719, 621653, 686073, 1343157, 1864959, 1904717, 5714151, 31788049, 44137363, 86409767, 95364147, 132412089, 259229301, 6135093457, 18405280371]

約数ペア:

[(1, 18405280371), (3, 6135093457), (71, 259229301), (139, 132412089), (193, 95364147), (213, 86409767), (417, 44137363), (579, 31788049), (3221, 5714151), (9663, 1904717), (9869, 1864959), (13703, 1343157), (26827, 686073), (29607, 621653), (41109, 447719), (80481, 228691)]