20858266

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{72931}}^1$

素因数の和:72957

約数の個数: 16

約数和(自身を含む): 36757728

約数和(自身を除く): 15899462

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 72931, 145862, 802241, 948103, 1604482, 1896206, 10429133, 20858266]

約数ペア:

[(1, 20858266), (2, 10429133), (11, 1896206), (13, 1604482), (22, 948103), (26, 802241), (143, 145862), (286, 72931)]