20957855

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{683}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 28145232

約数和(自身を除く): 7187377

約数列:

[1, 5, 17, 19, 85, 95, 323, 361, 683, 1615, 1805, 3415, 6137, 11611, 12977, 30685, 58055, 64885, 220609, 246563, 1103045, 1232815, 4191571, 20957855]

約数ペア:

[(1, 20957855), (5, 4191571), (17, 1232815), (19, 1103045), (85, 246563), (95, 220609), (323, 64885), (361, 58055), (683, 30685), (1615, 12977), (1805, 11611), (3415, 6137)]