87681440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{647}}^1$

素因数の和:691

約数の個数: 144

約数和(自身を含む): 260620416

約数和(自身を除く): 172938976

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 121, 140, 154, 160, 176, 220, 224, 242, 280, 308, 352, 385, 440, 484, 560, 605, 616, 647, 770, 847, 880, 968, 1120, 1210, 1232, 1294, 1540, 1694, 1760, 1936, 2420, 2464, 2588, 3080, 3235, 3388, 3872, 4235, 4529, 4840, 5176, 6160, 6470, 6776, 7117, 8470, 9058, 9680, 10352, 12320, 12940, 13552, 14234, 16940, 18116, 19360, 20704, 22645, 25880, 27104, 28468, 33880, 35585, 36232, 45290, 49819, 51760, 56936, 67760, 71170, 72464, 78287, 90580, 99638, 103520, 113872, 135520, 142340, 144928, 156574, 181160, 199276, 227744, 249095, 284680, 313148, 362320, 391435, 398552, 498190, 548009, 569360, 626296, 724640, 782870, 797104, 996380, 1096018, 1138720, 1252592, 1565740, 1594208, 1992760, 2192036, 2505184, 2740045, 3131480, 3985520, 4384072, 5480090, 6262960, 7971040, 8768144, 10960180, 12525920, 17536288, 21920360, 43840720, 87681440]

約数ペア:

[(1, 87681440), (2, 43840720), (4, 21920360), (5, 17536288), (7, 12525920), (8, 10960180), (10, 8768144), (11, 7971040), (14, 6262960), (16, 5480090), (20, 4384072), (22, 3985520), (28, 3131480), (32, 2740045), (35, 2505184), (40, 2192036), (44, 1992760), (55, 1594208), (56, 1565740), (70, 1252592), (77, 1138720), (80, 1096018), (88, 996380), (110, 797104), (112, 782870), (121, 724640), (140, 626296), (154, 569360), (160, 548009), (176, 498190), (220, 398552), (224, 391435), (242, 362320), (280, 313148), (308, 284680), (352, 249095), (385, 227744), (440, 199276), (484, 181160), (560, 156574), (605, 144928), (616, 142340), (647, 135520), (770, 113872), (847, 103520), (880, 99638), (968, 90580), (1120, 78287), (1210, 72464), (1232, 71170), (1294, 67760), (1540, 56936), (1694, 51760), (1760, 49819), (1936, 45290), (2420, 36232), (2464, 35585), (2588, 33880), (3080, 28468), (3235, 27104), (3388, 25880), (3872, 22645), (4235, 20704), (4529, 19360), (4840, 18116), (5176, 16940), (6160, 14234), (6470, 13552), (6776, 12940), (7117, 12320), (8470, 10352), (9058, 9680)]