656381440

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:221

約数の個数: 240

約数和(自身を含む): 1874348784

約数和(自身を除く): 1217967344

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 121, 128, 130, 143, 160, 163, 176, 208, 220, 242, 256, 260, 286, 320, 326, 352, 416, 440, 484, 512, 520, 572, 605, 640, 652, 704, 715, 815, 832, 880, 968, 1040, 1144, 1210, 1280, 1304, 1408, 1430, 1573, 1630, 1664, 1760, 1793, 1936, 2080, 2119, 2288, 2420, 2560, 2608, 2816, 2860, 3146, 3260, 3328, 3520, 3586, 3872, 4160, 4238, 4576, 4840, 5216, 5632, 5720, 6292, 6520, 6656, 7040, 7172, 7744, 7865, 8320, 8476, 8965, 9152, 9680, 10432, 10595, 11440, 12584, 13040, 14080, 14344, 15488, 15730, 16640, 16952, 17930, 18304, 19360, 19723, 20864, 21190, 22880, 23309, 25168, 26080, 28160, 28688, 30976, 31460, 33280, 33904, 35860, 36608, 38720, 39446, 41728, 42380, 45760, 46618, 50336, 52160, 57376, 61952, 62920, 67808, 71720, 73216, 77440, 78892, 83456, 84760, 91520, 93236, 98615, 100672, 104320, 114752, 116545, 125840, 135616, 143440, 154880, 157784, 169520, 183040, 186472, 197230, 201344, 208640, 229504, 233090, 251680, 256399, 271232, 286880, 309760, 315568, 339040, 366080, 372944, 394460, 402688, 417280, 459008, 466180, 503360, 512798, 542464, 573760, 631136, 678080, 745888, 788920, 805376, 918016, 932360, 1006720, 1025596, 1084928, 1147520, 1262272, 1281995, 1356160, 1491776, 1577840, 1864720, 2013440, 2051192, 2295040, 2524544, 2563990, 2712320, 2983552, 3155680, 3729440, 4026880, 4102384, 4590080, 5049088, 5127980, 5424640, 5967104, 6311360, 7458880, 8204768, 10098176, 10255960, 11934208, 12622720, 14917760, 16409536, 20511920, 25245440, 29835520, 32819072, 41023840, 50490880, 59671040, 65638144, 82047680, 131276288, 164095360, 328190720, 656381440]

約数ペア:

[(1, 656381440), (2, 328190720), (4, 164095360), (5, 131276288), (8, 82047680), (10, 65638144), (11, 59671040), (13, 50490880), (16, 41023840), (20, 32819072), (22, 29835520), (26, 25245440), (32, 20511920), (40, 16409536), (44, 14917760), (52, 12622720), (55, 11934208), (64, 10255960), (65, 10098176), (80, 8204768), (88, 7458880), (104, 6311360), (110, 5967104), (121, 5424640), (128, 5127980), (130, 5049088), (143, 4590080), (160, 4102384), (163, 4026880), (176, 3729440), (208, 3155680), (220, 2983552), (242, 2712320), (256, 2563990), (260, 2524544), (286, 2295040), (320, 2051192), (326, 2013440), (352, 1864720), (416, 1577840), (440, 1491776), (484, 1356160), (512, 1281995), (520, 1262272), (572, 1147520), (605, 1084928), (640, 1025596), (652, 1006720), (704, 932360), (715, 918016), (815, 805376), (832, 788920), (880, 745888), (968, 678080), (1040, 631136), (1144, 573760), (1210, 542464), (1280, 512798), (1304, 503360), (1408, 466180), (1430, 459008), (1573, 417280), (1630, 402688), (1664, 394460), (1760, 372944), (1793, 366080), (1936, 339040), (2080, 315568), (2119, 309760), (2288, 286880), (2420, 271232), (2560, 256399), (2608, 251680), (2816, 233090), (2860, 229504), (3146, 208640), (3260, 201344), (3328, 197230), (3520, 186472), (3586, 183040), (3872, 169520), (4160, 157784), (4238, 154880), (4576, 143440), (4840, 135616), (5216, 125840), (5632, 116545), (5720, 114752), (6292, 104320), (6520, 100672), (6656, 98615), (7040, 93236), (7172, 91520), (7744, 84760), (7865, 83456), (8320, 78892), (8476, 77440), (8965, 73216), (9152, 71720), (9680, 67808), (10432, 62920), (10595, 61952), (11440, 57376), (12584, 52160), (13040, 50336), (14080, 46618), (14344, 45760), (15488, 42380), (15730, 41728), (16640, 39446), (16952, 38720), (17930, 36608), (18304, 35860), (19360, 33904), (19723, 33280), (20864, 31460), (21190, 30976), (22880, 28688), (23309, 28160), (25168, 26080)]