20405864

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{62213}}^1$

素因数の和:62260

約数の個数: 16

約数和(自身を含む): 39194820

約数和(自身を除く): 18788956

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 62213, 124426, 248852, 497704, 2550733, 5101466, 10202932, 20405864]

約数ペア:

[(1, 20405864), (2, 10202932), (4, 5101466), (8, 2550733), (41, 497704), (82, 248852), (164, 124426), (328, 62213)]