20702871

素因数分解:

$3^6\times 7^1\times {\mathrm{4057}}^1$

素因数の和:4082

約数の個数: 28

約数和(自身を含む): 35483152

約数和(自身を除く): 14780281

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 4057, 5103, 12171, 28399, 36513, 85197, 109539, 255591, 328617, 766773, 985851, 2300319, 2957553, 6900957, 20702871]

約数ペア:

[(1, 20702871), (3, 6900957), (7, 2957553), (9, 2300319), (21, 985851), (27, 766773), (63, 328617), (81, 255591), (189, 109539), (243, 85197), (567, 36513), (729, 28399), (1701, 12171), (4057, 5103)]