20121199659

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{613}}^1$

素因数の和:802

約数の個数: 128

約数和(自身を含む): 34942003200

約数和(自身を除く): 14820803541

約数列:

[1, 3, 9, 11, 27, 29, 33, 37, 87, 99, 103, 111, 261, 297, 309, 319, 333, 407, 613, 783, 927, 957, 999, 1073, 1133, 1221, 1839, 2781, 2871, 2987, 3219, 3399, 3663, 3811, 5517, 6743, 8613, 8961, 9657, 10197, 10989, 11433, 11803, 16551, 17777, 20229, 22681, 26883, 28971, 30591, 32857, 34299, 35409, 41921, 53331, 60687, 63139, 68043, 80649, 98571, 102897, 106227, 110519, 125763, 159993, 182061, 189417, 195547, 204129, 249491, 295713, 318681, 331557, 377289, 479979, 568251, 586641, 612387, 657749, 694529, 748473, 887139, 994671, 1131867, 1215709, 1704753, 1759923, 1831031, 1973247, 2083587, 2245419, 2336143, 2984013, 3647127, 5279769, 5493093, 5919741, 6250761, 6736257, 7008429, 7235239, 10941381, 16479279, 17759223, 18752283, 20141341, 21025287, 21705717, 25697573, 32824143, 49437837, 60424023, 63075861, 65117151, 67748147, 77092719, 181272069, 195351453, 203244441, 231278157, 543816207, 609733323, 693834471, 745229617, 1829199969, 2235688851, 6707066553, 20121199659]

約数ペア:

[(1, 20121199659), (3, 6707066553), (9, 2235688851), (11, 1829199969), (27, 745229617), (29, 693834471), (33, 609733323), (37, 543816207), (87, 231278157), (99, 203244441), (103, 195351453), (111, 181272069), (261, 77092719), (297, 67748147), (309, 65117151), (319, 63075861), (333, 60424023), (407, 49437837), (613, 32824143), (783, 25697573), (927, 21705717), (957, 21025287), (999, 20141341), (1073, 18752283), (1133, 17759223), (1221, 16479279), (1839, 10941381), (2781, 7235239), (2871, 7008429), (2987, 6736257), (3219, 6250761), (3399, 5919741), (3663, 5493093), (3811, 5279769), (5517, 3647127), (6743, 2984013), (8613, 2336143), (8961, 2245419), (9657, 2083587), (10197, 1973247), (10989, 1831031), (11433, 1759923), (11803, 1704753), (16551, 1215709), (17777, 1131867), (20229, 994671), (22681, 887139), (26883, 748473), (28971, 694529), (30591, 657749), (32857, 612387), (34299, 586641), (35409, 568251), (41921, 479979), (53331, 377289), (60687, 331557), (63139, 318681), (68043, 295713), (80649, 249491), (98571, 204129), (102897, 195547), (106227, 189417), (110519, 182061), (125763, 159993)]