28947213

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{8311}}^1$

素因数の和:8366

約数の個数: 20

約数和(自身を含む): 44253088

約数和(自身を除く): 15305875

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 8311, 24933, 74799, 224397, 357373, 673191, 1072119, 3216357, 9649071, 28947213]

約数ペア:

[(1, 28947213), (3, 9649071), (9, 3216357), (27, 1072119), (43, 673191), (81, 357373), (129, 224397), (387, 74799), (1161, 24933), (3483, 8311)]