9870021

素因数分解:

$3^2\times 7^2\times {\mathrm{22381}}^1$

素因数の和:22401

約数の個数: 18

約数和(自身を含む): 16585062

約数和(自身を除く): 6715041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 22381, 67143, 156667, 201429, 470001, 1096669, 1410003, 3290007, 9870021]

約数ペア:

[(1, 9870021), (3, 3290007), (7, 1410003), (9, 1096669), (21, 470001), (49, 201429), (63, 156667), (147, 67143), (441, 22381)]