20808172

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67559}}^1$

素因数の和:67581

約数の個数: 24

約数和(自身を含む): 45400320

約数和(自身を除く): 24592148

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 67559, 135118, 270236, 472913, 743149, 945826, 1486298, 1891652, 2972596, 5202043, 10404086, 20808172]

約数ペア:

[(1, 20808172), (2, 10404086), (4, 5202043), (7, 2972596), (11, 1891652), (14, 1486298), (22, 945826), (28, 743149), (44, 472913), (77, 270236), (154, 135118), (308, 67559)]