21353139

素因数分解:

$3^6\times {\mathrm{17}}^1\times {\mathrm{1723}}^1$

素因数の和:1758

約数の個数: 28

約数和(自身を含む): 33917976

約数和(自身を除く): 12564837

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 729, 1377, 1723, 4131, 5169, 12393, 15507, 29291, 46521, 87873, 139563, 263619, 418689, 790857, 1256067, 2372571, 7117713, 21353139]

約数ペア:

[(1, 21353139), (3, 7117713), (9, 2372571), (17, 1256067), (27, 790857), (51, 418689), (81, 263619), (153, 139563), (243, 87873), (459, 46521), (729, 29291), (1377, 15507), (1723, 12393), (4131, 5169)]