20001982

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 41094144

約数和(自身を除く): 21092162

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 97, 103, 143, 154, 182, 194, 206, 286, 679, 721, 1001, 1067, 1133, 1261, 1339, 1358, 1442, 2002, 2134, 2266, 2522, 2678, 7469, 7931, 8827, 9373, 9991, 13871, 14729, 14938, 15862, 17654, 18746, 19982, 27742, 29458, 69937, 97097, 103103, 109901, 129883, 139874, 194194, 206206, 219802, 259766, 769307, 909181, 1428713, 1538614, 1818362, 2857426, 10000991, 20001982]

約数ペア:

[(1, 20001982), (2, 10000991), (7, 2857426), (11, 1818362), (13, 1538614), (14, 1428713), (22, 909181), (26, 769307), (77, 259766), (91, 219802), (97, 206206), (103, 194194), (143, 139874), (154, 129883), (182, 109901), (194, 103103), (206, 97097), (286, 69937), (679, 29458), (721, 27742), (1001, 19982), (1067, 18746), (1133, 17654), (1261, 15862), (1339, 14938), (1358, 14729), (1442, 13871), (2002, 9991), (2134, 9373), (2266, 8827), (2522, 7931), (2678, 7469)]