20512305765

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{131023}}^1$

素因数の和:131119

約数の個数: 72

約数和(自身を含む): 41942354688

約数和(自身を除く): 21430048923

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 71, 105, 147, 213, 245, 315, 355, 441, 497, 639, 735, 1065, 1491, 2205, 2485, 3195, 3479, 4473, 7455, 10437, 17395, 22365, 31311, 52185, 131023, 156555, 393069, 655115, 917161, 1179207, 1965345, 2751483, 4585805, 5896035, 6420127, 8254449, 9302633, 13757415, 19260381, 27907899, 32100635, 41272245, 46513165, 57781143, 65118431, 83723697, 96301905, 139539495, 195355293, 288905715, 325592155, 418618485, 455829017, 586065879, 976776465, 1367487051, 2279145085, 2930329395, 4102461153, 6837435255, 20512305765]

約数ペア:

[(1, 20512305765), (3, 6837435255), (5, 4102461153), (7, 2930329395), (9, 2279145085), (15, 1367487051), (21, 976776465), (35, 586065879), (45, 455829017), (49, 418618485), (63, 325592155), (71, 288905715), (105, 195355293), (147, 139539495), (213, 96301905), (245, 83723697), (315, 65118431), (355, 57781143), (441, 46513165), (497, 41272245), (639, 32100635), (735, 27907899), (1065, 19260381), (1491, 13757415), (2205, 9302633), (2485, 8254449), (3195, 6420127), (3479, 5896035), (4473, 4585805), (7455, 2751483), (10437, 1965345), (17395, 1179207), (22365, 917161), (31311, 655115), (52185, 393069), (131023, 156555)]