21895677

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15901}}^1$

素因数の和:15930

約数の個数: 20

約数和(自身を含む): 34634556

約数和(自身を除く): 12738879

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15901, 47703, 143109, 270317, 429327, 810951, 1287981, 2432853, 7298559, 21895677]

約数ペア:

[(1, 21895677), (3, 7298559), (9, 2432853), (17, 1287981), (27, 810951), (51, 429327), (81, 270317), (153, 143109), (459, 47703), (1377, 15901)]