81168280

素因数分解:

$2^3\times 5^1\times {\mathrm{2029207}}^1$

素因数の和:2029218

約数の個数: 16

約数和(自身を含む): 182628720

約数和(自身を除く): 101460440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2029207, 4058414, 8116828, 10146035, 16233656, 20292070, 40584140, 81168280]

約数ペア:

[(1, 81168280), (2, 40584140), (4, 20292070), (5, 16233656), (8, 10146035), (10, 8116828), (20, 4058414), (40, 2029207)]