640965888

素因数分解:

$2^8\times 3^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:285

約数の個数: 216

約数和(自身を含む): 1958622120

約数和(自身を除く): 1317656232

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 29, 32, 36, 48, 53, 58, 64, 72, 87, 96, 106, 116, 128, 144, 159, 174, 181, 192, 212, 232, 256, 261, 288, 318, 348, 362, 384, 424, 464, 477, 522, 543, 576, 636, 696, 724, 768, 848, 928, 954, 1044, 1086, 1152, 1272, 1392, 1448, 1537, 1629, 1696, 1856, 1908, 2088, 2172, 2304, 2544, 2784, 2896, 3074, 3258, 3392, 3712, 3816, 4176, 4344, 4611, 5088, 5249, 5568, 5792, 6148, 6516, 6784, 7424, 7632, 8352, 8688, 9222, 9593, 10176, 10498, 11136, 11584, 12296, 13032, 13568, 13833, 15264, 15747, 16704, 17376, 18444, 19186, 20352, 20996, 22272, 23168, 24592, 26064, 27666, 28779, 30528, 31494, 33408, 34752, 36888, 38372, 40704, 41992, 46336, 47241, 49184, 52128, 55332, 57558, 61056, 62988, 66816, 69504, 73776, 76744, 83984, 86337, 94482, 98368, 104256, 110664, 115116, 122112, 125976, 139008, 147552, 153488, 167968, 172674, 188964, 196736, 208512, 221328, 230232, 251952, 278197, 295104, 306976, 335936, 345348, 377928, 393472, 417024, 442656, 460464, 503904, 556394, 590208, 613952, 671872, 690696, 755856, 834591, 885312, 920928, 1007808, 1112788, 1180416, 1227904, 1343744, 1381392, 1511712, 1669182, 1770624, 1841856, 2015616, 2225576, 2455808, 2503773, 2762784, 3023424, 3338364, 3541248, 3683712, 4031232, 4451152, 5007546, 5525568, 6046848, 6676728, 7367424, 8902304, 10015092, 11051136, 12093696, 13353456, 17804608, 20030184, 22102272, 26706912, 35609216, 40060368, 53413824, 71218432, 80120736, 106827648, 160241472, 213655296, 320482944, 640965888]

約数ペア:

[(1, 640965888), (2, 320482944), (3, 213655296), (4, 160241472), (6, 106827648), (8, 80120736), (9, 71218432), (12, 53413824), (16, 40060368), (18, 35609216), (24, 26706912), (29, 22102272), (32, 20030184), (36, 17804608), (48, 13353456), (53, 12093696), (58, 11051136), (64, 10015092), (72, 8902304), (87, 7367424), (96, 6676728), (106, 6046848), (116, 5525568), (128, 5007546), (144, 4451152), (159, 4031232), (174, 3683712), (181, 3541248), (192, 3338364), (212, 3023424), (232, 2762784), (256, 2503773), (261, 2455808), (288, 2225576), (318, 2015616), (348, 1841856), (362, 1770624), (384, 1669182), (424, 1511712), (464, 1381392), (477, 1343744), (522, 1227904), (543, 1180416), (576, 1112788), (636, 1007808), (696, 920928), (724, 885312), (768, 834591), (848, 755856), (928, 690696), (954, 671872), (1044, 613952), (1086, 590208), (1152, 556394), (1272, 503904), (1392, 460464), (1448, 442656), (1537, 417024), (1629, 393472), (1696, 377928), (1856, 345348), (1908, 335936), (2088, 306976), (2172, 295104), (2304, 278197), (2544, 251952), (2784, 230232), (2896, 221328), (3074, 208512), (3258, 196736), (3392, 188964), (3712, 172674), (3816, 167968), (4176, 153488), (4344, 147552), (4611, 139008), (5088, 125976), (5249, 122112), (5568, 115116), (5792, 110664), (6148, 104256), (6516, 98368), (6784, 94482), (7424, 86337), (7632, 83984), (8352, 76744), (8688, 73776), (9222, 69504), (9593, 66816), (10176, 62988), (10498, 61056), (11136, 57558), (11584, 55332), (12296, 52128), (13032, 49184), (13568, 47241), (13833, 46336), (15264, 41992), (15747, 40704), (16704, 38372), (17376, 36888), (18444, 34752), (19186, 33408), (20352, 31494), (20996, 30528), (22272, 28779), (23168, 27666), (24592, 26064)]