640542168

素因数分解:

$2^3\times 3^5\times 7^1\times {\mathrm{103}}^1\times {\mathrm{457}}^1$

素因数の和:588

約数の個数: 192

約数和(自身を含む): 2080565760

約数和(自身を除く): 1440023592

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 81, 84, 103, 108, 126, 162, 168, 189, 206, 216, 243, 252, 309, 324, 378, 412, 457, 486, 504, 567, 618, 648, 721, 756, 824, 914, 927, 972, 1134, 1236, 1371, 1442, 1512, 1701, 1828, 1854, 1944, 2163, 2268, 2472, 2742, 2781, 2884, 3199, 3402, 3656, 3708, 4113, 4326, 4536, 5484, 5562, 5768, 6398, 6489, 6804, 7416, 8226, 8343, 8652, 9597, 10968, 11124, 12339, 12796, 12978, 13608, 16452, 16686, 17304, 19194, 19467, 22248, 24678, 25029, 25592, 25956, 28791, 32904, 33372, 37017, 38388, 38934, 47071, 49356, 50058, 51912, 57582, 58401, 66744, 74034, 76776, 77868, 86373, 94142, 98712, 100116, 111051, 115164, 116802, 141213, 148068, 155736, 172746, 175203, 188284, 200232, 222102, 230328, 233604, 259119, 282426, 296136, 329497, 345492, 350406, 376568, 423639, 444204, 467208, 518238, 564852, 658994, 690984, 700812, 777357, 847278, 888408, 988491, 1036476, 1129704, 1270917, 1317988, 1401624, 1554714, 1694556, 1976982, 2072952, 2541834, 2635976, 2965473, 3109428, 3389112, 3812751, 3953964, 5083668, 5930946, 6218856, 7625502, 7907928, 8896419, 10167336, 11438253, 11861892, 15251004, 17792838, 22876506, 23723784, 26689257, 30502008, 35585676, 45753012, 53378514, 71171352, 80067771, 91506024, 106757028, 160135542, 213514056, 320271084, 640542168]

約数ペア:

[(1, 640542168), (2, 320271084), (3, 213514056), (4, 160135542), (6, 106757028), (7, 91506024), (8, 80067771), (9, 71171352), (12, 53378514), (14, 45753012), (18, 35585676), (21, 30502008), (24, 26689257), (27, 23723784), (28, 22876506), (36, 17792838), (42, 15251004), (54, 11861892), (56, 11438253), (63, 10167336), (72, 8896419), (81, 7907928), (84, 7625502), (103, 6218856), (108, 5930946), (126, 5083668), (162, 3953964), (168, 3812751), (189, 3389112), (206, 3109428), (216, 2965473), (243, 2635976), (252, 2541834), (309, 2072952), (324, 1976982), (378, 1694556), (412, 1554714), (457, 1401624), (486, 1317988), (504, 1270917), (567, 1129704), (618, 1036476), (648, 988491), (721, 888408), (756, 847278), (824, 777357), (914, 700812), (927, 690984), (972, 658994), (1134, 564852), (1236, 518238), (1371, 467208), (1442, 444204), (1512, 423639), (1701, 376568), (1828, 350406), (1854, 345492), (1944, 329497), (2163, 296136), (2268, 282426), (2472, 259119), (2742, 233604), (2781, 230328), (2884, 222102), (3199, 200232), (3402, 188284), (3656, 175203), (3708, 172746), (4113, 155736), (4326, 148068), (4536, 141213), (5484, 116802), (5562, 115164), (5768, 111051), (6398, 100116), (6489, 98712), (6804, 94142), (7416, 86373), (8226, 77868), (8343, 76776), (8652, 74034), (9597, 66744), (10968, 58401), (11124, 57582), (12339, 51912), (12796, 50058), (12978, 49356), (13608, 47071), (16452, 38934), (16686, 38388), (17304, 37017), (19194, 33372), (19467, 32904), (22248, 28791), (24678, 25956), (25029, 25592)]