640546872

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{1709}}^1$

素因数の和:1845

約数の個数: 128

約数和(自身を含む): 1930521600

約数和(自身を除く): 1289974728

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 23, 24, 28, 42, 46, 56, 69, 84, 92, 97, 138, 161, 168, 184, 194, 276, 291, 322, 388, 483, 552, 582, 644, 679, 776, 966, 1164, 1288, 1358, 1709, 1932, 2037, 2231, 2328, 2716, 3418, 3864, 4074, 4462, 5127, 5432, 6693, 6836, 8148, 8924, 10254, 11963, 13386, 13672, 15617, 16296, 17848, 20508, 23926, 26772, 31234, 35889, 39307, 41016, 46851, 47852, 53544, 62468, 71778, 78614, 93702, 95704, 117921, 124936, 143556, 157228, 165773, 187404, 235842, 275149, 287112, 314456, 331546, 374808, 471684, 497319, 550298, 663092, 825447, 943368, 994638, 1100596, 1160411, 1326184, 1650894, 1989276, 2201192, 2320822, 3301788, 3481233, 3812779, 3978552, 4641644, 6603576, 6962466, 7625558, 9283288, 11438337, 13924932, 15251116, 22876674, 26689453, 27849864, 30502232, 45753348, 53378906, 80068359, 91506696, 106757812, 160136718, 213515624, 320273436, 640546872]

約数ペア:

[(1, 640546872), (2, 320273436), (3, 213515624), (4, 160136718), (6, 106757812), (7, 91506696), (8, 80068359), (12, 53378906), (14, 45753348), (21, 30502232), (23, 27849864), (24, 26689453), (28, 22876674), (42, 15251116), (46, 13924932), (56, 11438337), (69, 9283288), (84, 7625558), (92, 6962466), (97, 6603576), (138, 4641644), (161, 3978552), (168, 3812779), (184, 3481233), (194, 3301788), (276, 2320822), (291, 2201192), (322, 1989276), (388, 1650894), (483, 1326184), (552, 1160411), (582, 1100596), (644, 994638), (679, 943368), (776, 825447), (966, 663092), (1164, 550298), (1288, 497319), (1358, 471684), (1709, 374808), (1932, 331546), (2037, 314456), (2231, 287112), (2328, 275149), (2716, 235842), (3418, 187404), (3864, 165773), (4074, 157228), (4462, 143556), (5127, 124936), (5432, 117921), (6693, 95704), (6836, 93702), (8148, 78614), (8924, 71778), (10254, 62468), (11963, 53544), (13386, 47852), (13672, 46851), (15617, 41016), (16296, 39307), (17848, 35889), (20508, 31234), (23926, 26772)]