19817707

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{587}}^1$

素因数の和:667

約数の個数: 24

約数和(自身を含む): 25338096

約数和(自身を除く): 5520389

約数列:

[1, 7, 13, 49, 53, 91, 371, 587, 637, 689, 2597, 4109, 4823, 7631, 28763, 31111, 33761, 53417, 217777, 373919, 404443, 1524439, 2831101, 19817707]

約数ペア:

[(1, 19817707), (7, 2831101), (13, 1524439), (49, 404443), (53, 373919), (91, 217777), (371, 53417), (587, 33761), (637, 31111), (689, 28763), (2597, 7631), (4109, 4823)]