20688290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42221}}^1$

素因数の和:42242

約数の個数: 24

約数和(自身を含む): 43319772

約数和(自身を除く): 22631482

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42221, 84442, 211105, 295547, 422210, 591094, 1477735, 2068829, 2955470, 4137658, 10344145, 20688290]

約数ペア:

[(1, 20688290), (2, 10344145), (5, 4137658), (7, 2955470), (10, 2068829), (14, 1477735), (35, 591094), (49, 422210), (70, 295547), (98, 211105), (245, 84442), (490, 42221)]