20505145

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{761}}^1$

素因数の和:1100

約数の個数: 16

約数和(自身を含む): 26170128

約数和(自身を除く): 5664983

約数列:

[1, 5, 17, 85, 317, 761, 1585, 3805, 5389, 12937, 26945, 64685, 241237, 1206185, 4101029, 20505145]

約数ペア:

[(1, 20505145), (5, 4101029), (17, 1206185), (85, 241237), (317, 64685), (761, 26945), (1585, 12937), (3805, 5389)]