81501728

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:167

約数の個数: 144

約数和(自身を含む): 210212352

約数和(自身を除く): 128710624

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 32, 44, 56, 62, 77, 88, 97, 112, 121, 124, 154, 176, 194, 217, 224, 242, 248, 308, 341, 352, 388, 434, 484, 496, 616, 679, 682, 776, 847, 868, 968, 992, 1067, 1232, 1358, 1364, 1552, 1694, 1736, 1936, 2134, 2387, 2464, 2716, 2728, 3007, 3104, 3388, 3472, 3751, 3872, 4268, 4774, 5432, 5456, 6014, 6776, 6944, 7469, 7502, 8536, 9548, 10864, 10912, 11737, 12028, 13552, 14938, 15004, 17072, 19096, 21049, 21728, 23474, 24056, 26257, 27104, 29876, 30008, 33077, 34144, 38192, 42098, 46948, 48112, 52514, 59752, 60016, 66154, 76384, 82159, 84196, 93896, 96224, 105028, 119504, 120032, 132308, 164318, 168392, 187792, 210056, 231539, 239008, 264616, 328636, 336784, 363847, 375584, 420112, 463078, 529232, 657272, 673568, 727694, 840224, 926156, 1058464, 1314544, 1455388, 1852312, 2546929, 2629088, 2910776, 3704624, 5093858, 5821552, 7409248, 10187716, 11643104, 20375432, 40750864, 81501728]

約数ペア:

[(1, 81501728), (2, 40750864), (4, 20375432), (7, 11643104), (8, 10187716), (11, 7409248), (14, 5821552), (16, 5093858), (22, 3704624), (28, 2910776), (31, 2629088), (32, 2546929), (44, 1852312), (56, 1455388), (62, 1314544), (77, 1058464), (88, 926156), (97, 840224), (112, 727694), (121, 673568), (124, 657272), (154, 529232), (176, 463078), (194, 420112), (217, 375584), (224, 363847), (242, 336784), (248, 328636), (308, 264616), (341, 239008), (352, 231539), (388, 210056), (434, 187792), (484, 168392), (496, 164318), (616, 132308), (679, 120032), (682, 119504), (776, 105028), (847, 96224), (868, 93896), (968, 84196), (992, 82159), (1067, 76384), (1232, 66154), (1358, 60016), (1364, 59752), (1552, 52514), (1694, 48112), (1736, 46948), (1936, 42098), (2134, 38192), (2387, 34144), (2464, 33077), (2716, 30008), (2728, 29876), (3007, 27104), (3104, 26257), (3388, 24056), (3472, 23474), (3751, 21728), (3872, 21049), (4268, 19096), (4774, 17072), (5432, 15004), (5456, 14938), (6014, 13552), (6776, 12028), (6944, 11737), (7469, 10912), (7502, 10864), (8536, 9548)]