28111293

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1153}}^1$

素因数の和:1215

約数の個数: 40

約数和(自身を含む): 49151168

約数和(自身を除く): 21039875

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 903, 1153, 1161, 2709, 3459, 3483, 8071, 8127, 10377, 24213, 24381, 31131, 49579, 72639, 93393, 148737, 217917, 347053, 446211, 653751, 1041159, 1338633, 3123477, 4015899, 9370431, 28111293]

約数ペア:

[(1, 28111293), (3, 9370431), (7, 4015899), (9, 3123477), (21, 1338633), (27, 1041159), (43, 653751), (63, 446211), (81, 347053), (129, 217917), (189, 148737), (301, 93393), (387, 72639), (567, 49579), (903, 31131), (1153, 24381), (1161, 24213), (2709, 10377), (3459, 8127), (3483, 8071)]