28391377

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{433}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 37497600

約数和(自身を除く): 9106223

約数列:

[1, 7, 17, 19, 29, 119, 133, 203, 323, 433, 493, 551, 2261, 3031, 3451, 3857, 7361, 8227, 9367, 12557, 51527, 57589, 65569, 87899, 139859, 213469, 238583, 979013, 1494283, 1670081, 4055911, 28391377]

約数ペア:

[(1, 28391377), (7, 4055911), (17, 1670081), (19, 1494283), (29, 979013), (119, 238583), (133, 213469), (203, 139859), (323, 87899), (433, 65569), (493, 57589), (551, 51527), (2261, 12557), (3031, 9367), (3451, 8227), (3857, 7361)]