21931479

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{5309}}^1$

素因数の和:5341

約数の個数: 24

約数和(自身を含む): 34791120

約数和(自身を除く): 12859641

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 1377, 4131, 5309, 15927, 47781, 90253, 143343, 270759, 430029, 812277, 1290087, 2436831, 7310493, 21931479]

約数ペア:

[(1, 21931479), (3, 7310493), (9, 2436831), (17, 1290087), (27, 812277), (51, 430029), (81, 270759), (153, 143343), (243, 90253), (459, 47781), (1377, 15927), (4131, 5309)]