21288063

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{1663}}^1$

素因数の和:1934

約数の個数: 16

約数和(自身を含む): 30191616

約数和(自身を除く): 8903553

約数列:

[1, 3, 17, 51, 251, 753, 1663, 4267, 4989, 12801, 28271, 84813, 417413, 1252239, 7096021, 21288063]

約数ペア:

[(1, 21288063), (3, 7096021), (17, 1252239), (51, 417413), (251, 84813), (753, 28271), (1663, 12801), (4267, 4989)]