2668220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1499}}^1$

素因数の和:1597

約数の個数: 24

約数和(自身を含む): 5670000

約数和(自身を除く): 3001780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1499, 1780, 2998, 5996, 7495, 14990, 29980, 133411, 266822, 533644, 667055, 1334110, 2668220]

約数ペア:

[(1, 2668220), (2, 1334110), (4, 667055), (5, 533644), (10, 266822), (20, 133411), (89, 29980), (178, 14990), (356, 7495), (445, 5996), (890, 2998), (1499, 1780)]