20515170321

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{773}}^1\times {\mathrm{42737}}^1$

素因数の和:43542

約数の個数: 32

約数和(自身を含む): 31756043520

約数和(自身を除く): 11240873199

約数列:

[1, 3, 9, 23, 27, 69, 207, 621, 773, 2319, 6957, 17779, 20871, 42737, 53337, 128211, 160011, 384633, 480033, 982951, 1153899, 2948853, 8846559, 26539677, 33035701, 99107103, 297321309, 759821123, 891963927, 2279463369, 6838390107, 20515170321]

約数ペア:

[(1, 20515170321), (3, 6838390107), (9, 2279463369), (23, 891963927), (27, 759821123), (69, 297321309), (207, 99107103), (621, 33035701), (773, 26539677), (2319, 8846559), (6957, 2948853), (17779, 1153899), (20871, 982951), (42737, 480033), (53337, 384633), (128211, 160011)]