20161812304

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{656651}}^1$

素因数の和:656779

約数の個数: 40

約数和(自身を含む): 41526672480

約数和(自身を除く): 21364860176

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 101, 152, 202, 304, 404, 808, 1616, 1919, 3838, 7676, 15352, 30704, 656651, 1313302, 2626604, 5253208, 10506416, 12476369, 24952738, 49905476, 66321751, 99810952, 132643502, 199621904, 265287004, 530574008, 1061148016, 1260113269, 2520226538, 5040453076, 10080906152, 20161812304]

約数ペア:

[(1, 20161812304), (2, 10080906152), (4, 5040453076), (8, 2520226538), (16, 1260113269), (19, 1061148016), (38, 530574008), (76, 265287004), (101, 199621904), (152, 132643502), (202, 99810952), (304, 66321751), (404, 49905476), (808, 24952738), (1616, 12476369), (1919, 10506416), (3838, 5253208), (7676, 2626604), (15352, 1313302), (30704, 656651)]