9900009

素因数分解:

$3^3\times 7^3\times {\mathrm{1069}}^1$

素因数の和:1099

約数の個数: 32

約数和(自身を含む): 17120000

約数和(自身を除く): 7219991

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1069, 1323, 3087, 3207, 7483, 9261, 9621, 22449, 28863, 52381, 67347, 157143, 202041, 366667, 471429, 1100001, 1414287, 3300003, 9900009]

約数ペア:

[(1, 9900009), (3, 3300003), (7, 1414287), (9, 1100001), (21, 471429), (27, 366667), (49, 202041), (63, 157143), (147, 67347), (189, 52381), (343, 28863), (441, 22449), (1029, 9621), (1069, 9261), (1323, 7483), (3087, 3207)]