20497939

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{509}}^1\times {\mathrm{523}}^1$

素因数の和:1050

約数の個数: 16

約数和(自身を含む): 25655040

約数和(自身を除く): 5157101

約数列:

[1, 7, 11, 77, 509, 523, 3563, 3661, 5599, 5753, 39193, 40271, 266207, 1863449, 2928277, 20497939]

約数ペア:

[(1, 20497939), (7, 2928277), (11, 1863449), (77, 266207), (509, 40271), (523, 39193), (3563, 5753), (3661, 5599)]