20453489

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{503}}^1$

素因数の和:704

約数の個数: 16

約数和(自身を含む): 24208128

約数和(自身を除く): 3754639

約数列:

[1, 7, 37, 157, 259, 503, 1099, 3521, 5809, 18611, 40663, 78971, 130277, 552797, 2921927, 20453489]

約数ペア:

[(1, 20453489), (7, 2921927), (37, 552797), (157, 130277), (259, 78971), (503, 40663), (1099, 18611), (3521, 5809)]