21497799160

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{295787}}^1$

素因数の和:295900

約数の個数: 64

約数和(自身を含む): 51112166400

約数和(自身を除く): 29614367240

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 79, 92, 115, 158, 184, 230, 316, 395, 460, 632, 790, 920, 1580, 1817, 3160, 3634, 7268, 9085, 14536, 18170, 36340, 72680, 295787, 591574, 1183148, 1478935, 2366296, 2957870, 5915740, 6803101, 11831480, 13606202, 23367173, 27212404, 34015505, 46734346, 54424808, 68031010, 93468692, 116835865, 136062020, 186937384, 233671730, 272124040, 467343460, 537444979, 934686920, 1074889958, 2149779916, 2687224895, 4299559832, 5374449790, 10748899580, 21497799160]

約数ペア:

[(1, 21497799160), (2, 10748899580), (4, 5374449790), (5, 4299559832), (8, 2687224895), (10, 2149779916), (20, 1074889958), (23, 934686920), (40, 537444979), (46, 467343460), (79, 272124040), (92, 233671730), (115, 186937384), (158, 136062020), (184, 116835865), (230, 93468692), (316, 68031010), (395, 54424808), (460, 46734346), (632, 34015505), (790, 27212404), (920, 23367173), (1580, 13606202), (1817, 11831480), (3160, 6803101), (3634, 5915740), (7268, 2957870), (9085, 2366296), (14536, 1478935), (18170, 1183148), (36340, 591574), (72680, 295787)]