21163840

素因数分解:

$2^6\times 5^1\times {\mathrm{66137}}^1$

素因数の和:66154

約数の個数: 28

約数和(自身を含む): 50397156

約数和(自身を除く): 29233316

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66137, 132274, 264548, 330685, 529096, 661370, 1058192, 1322740, 2116384, 2645480, 4232768, 5290960, 10581920, 21163840]

約数ペア:

[(1, 21163840), (2, 10581920), (4, 5290960), (5, 4232768), (8, 2645480), (10, 2116384), (16, 1322740), (20, 1058192), (32, 661370), (40, 529096), (64, 330685), (80, 264548), (160, 132274), (320, 66137)]