28742121

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20873}}^1$

素因数の和:20902

約数の個数: 20

約数和(自身を含む): 45463572

約数和(自身を除く): 16721451

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20873, 62619, 187857, 354841, 563571, 1064523, 1690713, 3193569, 9580707, 28742121]

約数ペア:

[(1, 28742121), (3, 9580707), (9, 3193569), (17, 1690713), (27, 1064523), (51, 563571), (81, 354841), (153, 187857), (459, 62619), (1377, 20873)]