18720757

素因数分解:

${\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:537

約数の個数: 24

約数和(自身を含む): 22982400

約数和(自身を除く): 4261643

約数列:

[1, 11, 17, 19, 121, 187, 209, 323, 479, 2057, 2299, 3553, 5269, 8143, 9101, 39083, 57959, 89573, 100111, 154717, 985303, 1101221, 1701887, 18720757]

約数ペア:

[(1, 18720757), (11, 1701887), (17, 1101221), (19, 985303), (121, 154717), (187, 100111), (209, 89573), (323, 57959), (479, 39083), (2057, 9101), (2299, 8143), (3553, 5269)]