18910738

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:343

約数の個数: 64

約数和(自身を含む): 38983680

約数和(自身を除く): 20072942

約数列:

[1, 2, 7, 11, 14, 19, 22, 23, 38, 46, 77, 133, 154, 161, 209, 253, 266, 281, 322, 418, 437, 506, 562, 874, 1463, 1771, 1967, 2926, 3059, 3091, 3542, 3934, 4807, 5339, 6118, 6182, 6463, 9614, 10678, 12926, 21637, 33649, 37373, 43274, 45241, 58729, 67298, 71093, 74746, 90482, 117458, 122797, 142186, 245594, 411103, 497651, 822206, 859579, 995302, 1350767, 1719158, 2701534, 9455369, 18910738]

約数ペア:

[(1, 18910738), (2, 9455369), (7, 2701534), (11, 1719158), (14, 1350767), (19, 995302), (22, 859579), (23, 822206), (38, 497651), (46, 411103), (77, 245594), (133, 142186), (154, 122797), (161, 117458), (209, 90482), (253, 74746), (266, 71093), (281, 67298), (322, 58729), (418, 45241), (437, 43274), (506, 37373), (562, 33649), (874, 21637), (1463, 12926), (1771, 10678), (1967, 9614), (2926, 6463), (3059, 6182), (3091, 6118), (3542, 5339), (3934, 4807)]