20804320

素因数分解:

$2^5\times 5^1\times {\mathrm{130027}}^1$

素因数の和:130042

約数の個数: 24

約数和(自身を含む): 49150584

約数和(自身を除く): 28346264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 130027, 260054, 520108, 650135, 1040216, 1300270, 2080432, 2600540, 4160864, 5201080, 10402160, 20804320]

約数ペア:

[(1, 20804320), (2, 10402160), (4, 5201080), (5, 4160864), (8, 2600540), (10, 2080432), (16, 1300270), (20, 1040216), (32, 650135), (40, 520108), (80, 260054), (160, 130027)]