20895515

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{2719}}^1$

素因数の和:2806

約数の個数: 16

約数和(自身を含む): 26438400

約数和(自身を除く): 5542885

約数列:

[1, 5, 29, 53, 145, 265, 1537, 2719, 7685, 13595, 78851, 144107, 394255, 720535, 4179103, 20895515]

約数ペア:

[(1, 20895515), (5, 4179103), (29, 720535), (53, 394255), (145, 144107), (265, 78851), (1537, 13595), (2719, 7685)]