20397699

素因数分解:

$3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1627}}^1$

素因数の和:1839

約数の個数: 24

約数和(自身を含む): 33862400

約数和(自身を除く): 13464701

約数列:

[1, 3, 7, 9, 21, 63, 199, 597, 1393, 1627, 1791, 4179, 4881, 11389, 12537, 14643, 34167, 102501, 323773, 971319, 2266411, 2913957, 6799233, 20397699]

約数ペア:

[(1, 20397699), (3, 6799233), (7, 2913957), (9, 2266411), (21, 971319), (63, 323773), (199, 102501), (597, 34167), (1393, 14643), (1627, 12537), (1791, 11389), (4179, 4881)]