16821063

素因数分解:

$3^2\times 7^3\times {\mathrm{5449}}^1$

素因数の和:5476

約数の個数: 24

約数和(自身を含む): 28340000

約数和(自身を除く): 11518937

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 5449, 16347, 38143, 49041, 114429, 267001, 343287, 801003, 1869007, 2403009, 5607021, 16821063]

約数ペア:

[(1, 16821063), (3, 5607021), (7, 2403009), (9, 1869007), (21, 801003), (49, 343287), (63, 267001), (147, 114429), (343, 49041), (441, 38143), (1029, 16347), (3087, 5449)]