20790027

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:229

約数の個数: 40

約数和(自身を含む): 32710656

約数和(自身を除く): 11920629

約数列:

[1, 3, 9, 27, 43, 47, 81, 127, 129, 141, 381, 387, 423, 1143, 1161, 1269, 2021, 3429, 3483, 3807, 5461, 5969, 6063, 10287, 16383, 17907, 18189, 49149, 53721, 54567, 147447, 161163, 163701, 256667, 442341, 483489, 770001, 2310003, 6930009, 20790027]

約数ペア:

[(1, 20790027), (3, 6930009), (9, 2310003), (27, 770001), (43, 483489), (47, 442341), (81, 256667), (127, 163701), (129, 161163), (141, 147447), (381, 54567), (387, 53721), (423, 49149), (1143, 18189), (1161, 17907), (1269, 16383), (2021, 10287), (3429, 6063), (3483, 5969), (3807, 5461)]