211330287

素因数分解:

$3^2\times 7^2\times {\mathrm{347}}^1\times {\mathrm{1381}}^1$

素因数の和:1748

約数の個数: 36

約数和(自身を含む): 356373576

約数和(自身を除く): 145043289

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 347, 441, 1041, 1381, 2429, 3123, 4143, 7287, 9667, 12429, 17003, 21861, 29001, 51009, 67669, 87003, 153027, 203007, 479207, 609021, 1437621, 3354449, 4312863, 10063347, 23481143, 30190041, 70443429, 211330287]

約数ペア:

[(1, 211330287), (3, 70443429), (7, 30190041), (9, 23481143), (21, 10063347), (49, 4312863), (63, 3354449), (147, 1437621), (347, 609021), (441, 479207), (1041, 203007), (1381, 153027), (2429, 87003), (3123, 67669), (4143, 51009), (7287, 29001), (9667, 21861), (12429, 17003)]