21090355

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2269}}^1$

素因数の和:2311

約数の個数: 24

約数和(自身を含む): 29909520

約数和(自身を除く): 8819165

約数列:

[1, 5, 11, 13, 55, 65, 143, 169, 715, 845, 1859, 2269, 9295, 11345, 24959, 29497, 124795, 147485, 324467, 383461, 1622335, 1917305, 4218071, 21090355]

約数ペア:

[(1, 21090355), (5, 4218071), (11, 1917305), (13, 1622335), (55, 383461), (65, 324467), (143, 147485), (169, 124795), (715, 29497), (845, 24959), (1859, 11345), (2269, 9295)]