278474240

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:105

約数の個数: 240

約数和(自身を含む): 783699840

約数和(自身を除く): 505225600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 31, 32, 40, 44, 55, 58, 62, 64, 80, 88, 110, 116, 121, 124, 128, 145, 155, 160, 176, 220, 232, 242, 248, 256, 290, 310, 319, 320, 341, 352, 440, 464, 484, 496, 512, 580, 605, 620, 638, 640, 682, 704, 880, 899, 928, 968, 992, 1160, 1210, 1240, 1276, 1280, 1364, 1408, 1595, 1705, 1760, 1798, 1856, 1936, 1984, 2320, 2420, 2480, 2552, 2560, 2728, 2816, 3190, 3410, 3509, 3520, 3596, 3712, 3751, 3872, 3968, 4495, 4640, 4840, 4960, 5104, 5456, 5632, 6380, 6820, 7018, 7040, 7192, 7424, 7502, 7744, 7936, 8990, 9280, 9680, 9889, 9920, 10208, 10912, 12760, 13640, 14036, 14080, 14384, 14848, 15004, 15488, 15872, 17545, 17980, 18560, 18755, 19360, 19778, 19840, 20416, 21824, 25520, 27280, 28072, 28160, 28768, 30008, 30976, 35090, 35960, 37120, 37510, 38720, 39556, 39680, 40832, 43648, 49445, 51040, 54560, 56144, 57536, 60016, 61952, 70180, 71920, 74240, 75020, 77440, 79112, 79360, 81664, 87296, 98890, 102080, 108779, 109120, 112288, 115072, 120032, 140360, 143840, 150040, 154880, 158224, 163328, 174592, 197780, 204160, 217558, 218240, 224576, 230144, 240064, 280720, 287680, 300080, 309760, 316448, 395560, 408320, 435116, 436480, 449152, 460288, 480128, 543895, 561440, 575360, 600160, 632896, 791120, 816640, 870232, 872960, 898304, 960256, 1087790, 1122880, 1150720, 1200320, 1265792, 1582240, 1740464, 1796608, 1920512, 2175580, 2245760, 2301440, 2400640, 2531584, 3164480, 3480928, 4351160, 4491520, 4801280, 5063168, 6328960, 6961856, 8702320, 8983040, 9602560, 12657920, 13923712, 17404640, 25315840, 27847424, 34809280, 55694848, 69618560, 139237120, 278474240]

約数ペア:

[(1, 278474240), (2, 139237120), (4, 69618560), (5, 55694848), (8, 34809280), (10, 27847424), (11, 25315840), (16, 17404640), (20, 13923712), (22, 12657920), (29, 9602560), (31, 8983040), (32, 8702320), (40, 6961856), (44, 6328960), (55, 5063168), (58, 4801280), (62, 4491520), (64, 4351160), (80, 3480928), (88, 3164480), (110, 2531584), (116, 2400640), (121, 2301440), (124, 2245760), (128, 2175580), (145, 1920512), (155, 1796608), (160, 1740464), (176, 1582240), (220, 1265792), (232, 1200320), (242, 1150720), (248, 1122880), (256, 1087790), (290, 960256), (310, 898304), (319, 872960), (320, 870232), (341, 816640), (352, 791120), (440, 632896), (464, 600160), (484, 575360), (496, 561440), (512, 543895), (580, 480128), (605, 460288), (620, 449152), (638, 436480), (640, 435116), (682, 408320), (704, 395560), (880, 316448), (899, 309760), (928, 300080), (968, 287680), (992, 280720), (1160, 240064), (1210, 230144), (1240, 224576), (1276, 218240), (1280, 217558), (1364, 204160), (1408, 197780), (1595, 174592), (1705, 163328), (1760, 158224), (1798, 154880), (1856, 150040), (1936, 143840), (1984, 140360), (2320, 120032), (2420, 115072), (2480, 112288), (2552, 109120), (2560, 108779), (2728, 102080), (2816, 98890), (3190, 87296), (3410, 81664), (3509, 79360), (3520, 79112), (3596, 77440), (3712, 75020), (3751, 74240), (3872, 71920), (3968, 70180), (4495, 61952), (4640, 60016), (4840, 57536), (4960, 56144), (5104, 54560), (5456, 51040), (5632, 49445), (6380, 43648), (6820, 40832), (7018, 39680), (7040, 39556), (7192, 38720), (7424, 37510), (7502, 37120), (7744, 35960), (7936, 35090), (8990, 30976), (9280, 30008), (9680, 28768), (9889, 28160), (9920, 28072), (10208, 27280), (10912, 25520), (12760, 21824), (13640, 20416), (14036, 19840), (14080, 19778), (14384, 19360), (14848, 18755), (15004, 18560), (15488, 17980), (15872, 17545)]