28456839

素因数分解:

$3^4\times {\mathrm{257}}^1\times {\mathrm{1367}}^1$

素因数の和:1636

約数の個数: 20

約数和(自身を含む): 42706224

約数和(自身を除く): 14249385

約数列:

[1, 3, 9, 27, 81, 257, 771, 1367, 2313, 4101, 6939, 12303, 20817, 36909, 110727, 351319, 1053957, 3161871, 9485613, 28456839]

約数ペア:

[(1, 28456839), (3, 9485613), (9, 3161871), (27, 1053957), (81, 351319), (257, 110727), (771, 36909), (1367, 20817), (2313, 12303), (4101, 6939)]