28389231

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2789}}^1$

素因数の和:2840

約数の個数: 32

約数和(自身を含む): 46872000

約数和(自身を除く): 18482769

約数列:

[1, 3, 9, 13, 27, 29, 39, 87, 117, 261, 351, 377, 783, 1131, 2789, 3393, 8367, 10179, 25101, 36257, 75303, 80881, 108771, 242643, 326313, 727929, 978939, 1051453, 2183787, 3154359, 9463077, 28389231]

約数ペア:

[(1, 28389231), (3, 9463077), (9, 3154359), (13, 2183787), (27, 1051453), (29, 978939), (39, 727929), (87, 326313), (117, 242643), (261, 108771), (351, 80881), (377, 75303), (783, 36257), (1131, 25101), (2789, 10179), (3393, 8367)]