20512781489

素因数分解:

${\mathrm{53}}^2\times {\mathrm{2053}}^1\times {\mathrm{3557}}^1$

素因数の和:5716

約数の個数: 12

約数和(自身を含む): 20923181916

約数和(自身を除く): 410400427

約数列:

[1, 53, 2053, 2809, 3557, 108809, 188521, 5766877, 7302521, 9991613, 387033613, 20512781489]

約数ペア:

[(1, 20512781489), (53, 387033613), (2053, 9991613), (2809, 7302521), (3557, 5766877), (108809, 188521)]