21071286

素因数分解:

$2^1\times 3^3\times {\mathrm{390209}}^1$

素因数の和:390220

約数の個数: 16

約数和(自身を含む): 46825200

約数和(自身を除く): 25753914

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 390209, 780418, 1170627, 2341254, 3511881, 7023762, 10535643, 21071286]

約数ペア:

[(1, 21071286), (2, 10535643), (3, 7023762), (6, 3511881), (9, 2341254), (18, 1170627), (27, 780418), (54, 390209)]