21413889

素因数分解:

$3^5\times 7^1\times {\mathrm{12589}}^1$

素因数の和:12611

約数の個数: 24

約数和(自身を含む): 36662080

約数和(自身を除く): 15248191

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12589, 37767, 88123, 113301, 264369, 339903, 793107, 1019709, 2379321, 3059127, 7137963, 21413889]

約数ペア:

[(1, 21413889), (3, 7137963), (7, 3059127), (9, 2379321), (21, 1019709), (27, 793107), (63, 339903), (81, 264369), (189, 113301), (243, 88123), (567, 37767), (1701, 12589)]