21000481218

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^2\times {\mathrm{83}}^1\times {\mathrm{14627}}^1$

素因数の和:14780

約数の個数: 72

約数和(自身を含む): 47585878704

約数和(自身を除く): 26585397486

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 83, 93, 166, 186, 249, 279, 498, 558, 747, 961, 1494, 1922, 2573, 2883, 5146, 5766, 7719, 8649, 14627, 15438, 17298, 23157, 29254, 43881, 46314, 79763, 87762, 131643, 159526, 239289, 263286, 453437, 478578, 717867, 906874, 1214041, 1360311, 1435734, 2428082, 2720622, 3642123, 4080933, 7284246, 8161866, 10926369, 14056547, 21852738, 28113094, 37635271, 42169641, 75270542, 84339282, 112905813, 126508923, 225811626, 253017846, 338717439, 677434878, 1166693401, 2333386802, 3500080203, 7000160406, 10500240609, 21000481218]

約数ペア:

[(1, 21000481218), (2, 10500240609), (3, 7000160406), (6, 3500080203), (9, 2333386802), (18, 1166693401), (31, 677434878), (62, 338717439), (83, 253017846), (93, 225811626), (166, 126508923), (186, 112905813), (249, 84339282), (279, 75270542), (498, 42169641), (558, 37635271), (747, 28113094), (961, 21852738), (1494, 14056547), (1922, 10926369), (2573, 8161866), (2883, 7284246), (5146, 4080933), (5766, 3642123), (7719, 2720622), (8649, 2428082), (14627, 1435734), (15438, 1360311), (17298, 1214041), (23157, 906874), (29254, 717867), (43881, 478578), (46314, 453437), (79763, 263286), (87762, 239289), (131643, 159526)]