18978531

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 30989952

約数和(自身を除く): 12011421

約数列:

[1, 3, 11, 13, 33, 39, 41, 83, 123, 143, 169, 249, 429, 451, 507, 533, 913, 1079, 1353, 1599, 1859, 2739, 3237, 3403, 5577, 5863, 6929, 10209, 11869, 14027, 17589, 20787, 35607, 37433, 42081, 44239, 76219, 112299, 132717, 154297, 228657, 462891, 486629, 575107, 1459887, 1725321, 6326177, 18978531]

約数ペア:

[(1, 18978531), (3, 6326177), (11, 1725321), (13, 1459887), (33, 575107), (39, 486629), (41, 462891), (83, 228657), (123, 154297), (143, 132717), (169, 112299), (249, 76219), (429, 44239), (451, 42081), (507, 37433), (533, 35607), (913, 20787), (1079, 17589), (1353, 14027), (1599, 11869), (1859, 10209), (2739, 6929), (3237, 5863), (3403, 5577)]