28399091

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 36480000

約数和(自身を除く): 8080909

約数列:

[1, 7, 19, 29, 37, 133, 199, 203, 259, 551, 703, 1073, 1393, 3781, 3857, 4921, 5771, 7363, 7511, 20387, 26467, 40397, 51541, 109649, 139897, 142709, 213527, 767543, 979279, 1494689, 4057013, 28399091]

約数ペア:

[(1, 28399091), (7, 4057013), (19, 1494689), (29, 979279), (37, 767543), (133, 213527), (199, 142709), (203, 139897), (259, 109649), (551, 51541), (703, 40397), (1073, 26467), (1393, 20387), (3781, 7511), (3857, 7363), (4921, 5771)]