28238139

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20507}}^1$

素因数の和:20536

約数の個数: 20

約数和(自身を含む): 44666424

約数和(自身を除く): 16428285

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20507, 61521, 184563, 348619, 553689, 1045857, 1661067, 3137571, 9412713, 28238139]

約数ペア:

[(1, 28238139), (3, 9412713), (9, 3137571), (17, 1661067), (27, 1045857), (51, 553689), (81, 348619), (153, 184563), (459, 61521), (1377, 20507)]