21785104

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{3019}}^1$

素因数の和:3079

約数の個数: 40

約数和(自身を含む): 47184480

約数和(自身を除く): 25399376

約数列:

[1, 2, 4, 8, 11, 16, 22, 41, 44, 82, 88, 164, 176, 328, 451, 656, 902, 1804, 3019, 3608, 6038, 7216, 12076, 24152, 33209, 48304, 66418, 123779, 132836, 247558, 265672, 495116, 531344, 990232, 1361569, 1980464, 2723138, 5446276, 10892552, 21785104]

約数ペア:

[(1, 21785104), (2, 10892552), (4, 5446276), (8, 2723138), (11, 1980464), (16, 1361569), (22, 990232), (41, 531344), (44, 495116), (82, 265672), (88, 247558), (164, 132836), (176, 123779), (328, 66418), (451, 48304), (656, 33209), (902, 24152), (1804, 12076), (3019, 7216), (3608, 6038)]