18388645

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 25940736

約数和(自身を除く): 7552091

約数列:

[1, 5, 11, 17, 55, 71, 85, 187, 277, 355, 781, 935, 1207, 1385, 3047, 3905, 4709, 6035, 13277, 15235, 19667, 23545, 51799, 66385, 98335, 216337, 258995, 334339, 1081685, 1671695, 3677729, 18388645]

約数ペア:

[(1, 18388645), (5, 3677729), (11, 1671695), (17, 1081685), (55, 334339), (71, 258995), (85, 216337), (187, 98335), (277, 66385), (355, 51799), (781, 23545), (935, 19667), (1207, 15235), (1385, 13277), (3047, 6035), (3905, 4709)]