20561373

素因数分解:

$3^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{839}}^1$

素因数の和:1241

約数の個数: 24

約数和(自身を含む): 34070400

約数和(自身を除く): 13509027

約数列:

[1, 3, 7, 9, 21, 63, 389, 839, 1167, 2517, 2723, 3501, 5873, 7551, 8169, 17619, 24507, 52857, 326371, 979113, 2284597, 2937339, 6853791, 20561373]

約数ペア:

[(1, 20561373), (3, 6853791), (7, 2937339), (9, 2284597), (21, 979113), (63, 326371), (389, 52857), (839, 24507), (1167, 17619), (2517, 8169), (2723, 7551), (3501, 5873)]