1278927

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{643}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 2109744

約数和(自身を除く): 830817

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 643, 663, 1929, 1989, 5787, 8359, 10931, 25077, 32793, 75231, 98379, 142103, 426309, 1278927]

約数ペア:

[(1, 1278927), (3, 426309), (9, 142103), (13, 98379), (17, 75231), (39, 32793), (51, 25077), (117, 10931), (153, 8359), (221, 5787), (643, 1989), (663, 1929)]