20080775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 30185568

約数和(自身を除く): 10104793

約数列:

[1, 5, 11, 13, 25, 41, 55, 65, 137, 143, 205, 275, 325, 451, 533, 685, 715, 1025, 1507, 1781, 2255, 2665, 3425, 3575, 5617, 5863, 7535, 8905, 11275, 13325, 19591, 28085, 29315, 37675, 44525, 61787, 73021, 97955, 140425, 146575, 308935, 365105, 489775, 803231, 1544675, 1825525, 4016155, 20080775]

約数ペア:

[(1, 20080775), (5, 4016155), (11, 1825525), (13, 1544675), (25, 803231), (41, 489775), (55, 365105), (65, 308935), (137, 146575), (143, 140425), (205, 97955), (275, 73021), (325, 61787), (451, 44525), (533, 37675), (685, 29315), (715, 28085), (1025, 19591), (1507, 13325), (1781, 11275), (2255, 8905), (2665, 7535), (3425, 5863), (3575, 5617)]