51215740

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1\times {\mathrm{389}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 112039200

約数和(自身を除く): 60823460

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 227, 290, 389, 454, 580, 778, 908, 1135, 1556, 1945, 2270, 3890, 4540, 6583, 7780, 11281, 13166, 22562, 26332, 32915, 45124, 56405, 65830, 88303, 112810, 131660, 176606, 225620, 353212, 441515, 883030, 1766060, 2560787, 5121574, 10243148, 12803935, 25607870, 51215740]

約数ペア:

[(1, 51215740), (2, 25607870), (4, 12803935), (5, 10243148), (10, 5121574), (20, 2560787), (29, 1766060), (58, 883030), (116, 441515), (145, 353212), (227, 225620), (290, 176606), (389, 131660), (454, 112810), (580, 88303), (778, 65830), (908, 56405), (1135, 45124), (1556, 32915), (1945, 26332), (2270, 22562), (3890, 13166), (4540, 11281), (6583, 7780)]