21929031

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{8431}}^1$

素因数の和:8471

約数の個数: 18

約数和(自身を含む): 33652112

約数和(自身を除く): 11723081

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 8431, 25293, 75879, 143327, 429981, 1289943, 2436559, 7309677, 21929031]

約数ペア:

[(1, 21929031), (3, 7309677), (9, 2436559), (17, 1289943), (51, 429981), (153, 143327), (289, 75879), (867, 25293), (2601, 8431)]