9871209

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1109}}^1$

素因数の和:1181

約数の個数: 24

約数和(自身を含む): 15238080

約数和(自身を除く): 5366871

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 1109, 2967, 3327, 8901, 9981, 25507, 47687, 76521, 143061, 229563, 429183, 1096801, 3290403, 9871209]

約数ペア:

[(1, 9871209), (3, 3290403), (9, 1096801), (23, 429183), (43, 229563), (69, 143061), (129, 76521), (207, 47687), (387, 25507), (989, 9981), (1109, 8901), (2967, 3327)]