205128063

素因数分解:

$3^2\times 7^3\times {\mathrm{66449}}^1$

素因数の和:66476

約数の個数: 24

約数和(自身を含む): 345540000

約数和(自身を除く): 140411937

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 66449, 199347, 465143, 598041, 1395429, 3256001, 4186287, 9768003, 22792007, 29304009, 68376021, 205128063]

約数ペア:

[(1, 205128063), (3, 68376021), (7, 29304009), (9, 22792007), (21, 9768003), (49, 4186287), (63, 3256001), (147, 1395429), (343, 598041), (441, 465143), (1029, 199347), (3087, 66449)]