20921472729

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{2909}}^1\times {\mathrm{11927}}^1$

素因数の和:14909

約数の個数: 24

約数和(自身を含む): 30684064320

約数和(自身を除く): 9762591591

約数列:

[1, 3, 9, 67, 201, 603, 2909, 8727, 11927, 26181, 35781, 107343, 194903, 584709, 799109, 1754127, 2397327, 7191981, 34695643, 104086929, 312260787, 2324608081, 6973824243, 20921472729]

約数ペア:

[(1, 20921472729), (3, 6973824243), (9, 2324608081), (67, 312260787), (201, 104086929), (603, 34695643), (2909, 7191981), (8727, 2397327), (11927, 1754127), (26181, 799109), (35781, 584709), (107343, 194903)]