28237209

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9403}}^1$

素因数の和:9437

約数の個数: 32

約数和(自身を含む): 50555904

約数和(自身を除く): 22318695

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 9403, 28209, 65821, 103433, 122239, 197463, 310299, 366717, 724031, 855673, 1344629, 2172093, 2567019, 4033887, 9412403, 28237209]

約数ペア:

[(1, 28237209), (3, 9412403), (7, 4033887), (11, 2567019), (13, 2172093), (21, 1344629), (33, 855673), (39, 724031), (77, 366717), (91, 310299), (143, 197463), (231, 122239), (273, 103433), (429, 65821), (1001, 28209), (3003, 9403)]