18640721

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{1201}}^1$

素因数の和:1312

約数の個数: 16

約数和(自身を含む): 21809088

約数和(自身を除く): 3168367

約数列:

[1, 11, 17, 83, 187, 913, 1201, 1411, 13211, 15521, 20417, 99683, 224587, 1096513, 1694611, 18640721]

約数ペア:

[(1, 18640721), (11, 1694611), (17, 1096513), (83, 224587), (187, 99683), (913, 20417), (1201, 15521), (1411, 13211)]