128878848

素因数分解:

$2^8\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:221

約数の個数: 216

約数和(自身を含む): 434930496

約数和(自身を除く): 306051648

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 56, 61, 63, 64, 72, 84, 96, 112, 122, 126, 128, 131, 144, 168, 183, 192, 224, 244, 252, 256, 262, 288, 336, 366, 384, 393, 427, 448, 488, 504, 524, 549, 576, 672, 732, 768, 786, 854, 896, 917, 976, 1008, 1048, 1098, 1152, 1179, 1281, 1344, 1464, 1572, 1708, 1792, 1834, 1952, 2016, 2096, 2196, 2304, 2358, 2562, 2688, 2751, 2928, 3144, 3416, 3668, 3843, 3904, 4032, 4192, 4392, 4716, 5124, 5376, 5502, 5856, 6288, 6832, 7336, 7686, 7808, 7991, 8064, 8253, 8384, 8784, 9432, 10248, 11004, 11712, 12576, 13664, 14672, 15372, 15616, 15982, 16128, 16506, 16768, 17568, 18864, 20496, 22008, 23424, 23973, 25152, 27328, 29344, 30744, 31964, 33012, 33536, 35136, 37728, 40992, 44016, 46848, 47946, 50304, 54656, 55937, 58688, 61488, 63928, 66024, 70272, 71919, 75456, 81984, 88032, 95892, 100608, 109312, 111874, 117376, 122976, 127856, 132048, 140544, 143838, 150912, 163968, 167811, 176064, 191784, 223748, 234752, 245952, 255712, 264096, 287676, 301824, 327936, 335622, 352128, 383568, 447496, 491904, 503433, 511424, 528192, 575352, 671244, 704256, 767136, 894992, 983808, 1006866, 1022848, 1056384, 1150704, 1342488, 1534272, 1789984, 2013732, 2045696, 2112768, 2301408, 2684976, 3068544, 3579968, 4027464, 4602816, 5369952, 6137088, 7159936, 8054928, 9205632, 10739904, 14319872, 16109856, 18411264, 21479808, 32219712, 42959616, 64439424, 128878848]

約数ペア:

[(1, 128878848), (2, 64439424), (3, 42959616), (4, 32219712), (6, 21479808), (7, 18411264), (8, 16109856), (9, 14319872), (12, 10739904), (14, 9205632), (16, 8054928), (18, 7159936), (21, 6137088), (24, 5369952), (28, 4602816), (32, 4027464), (36, 3579968), (42, 3068544), (48, 2684976), (56, 2301408), (61, 2112768), (63, 2045696), (64, 2013732), (72, 1789984), (84, 1534272), (96, 1342488), (112, 1150704), (122, 1056384), (126, 1022848), (128, 1006866), (131, 983808), (144, 894992), (168, 767136), (183, 704256), (192, 671244), (224, 575352), (244, 528192), (252, 511424), (256, 503433), (262, 491904), (288, 447496), (336, 383568), (366, 352128), (384, 335622), (393, 327936), (427, 301824), (448, 287676), (488, 264096), (504, 255712), (524, 245952), (549, 234752), (576, 223748), (672, 191784), (732, 176064), (768, 167811), (786, 163968), (854, 150912), (896, 143838), (917, 140544), (976, 132048), (1008, 127856), (1048, 122976), (1098, 117376), (1152, 111874), (1179, 109312), (1281, 100608), (1344, 95892), (1464, 88032), (1572, 81984), (1708, 75456), (1792, 71919), (1834, 70272), (1952, 66024), (2016, 63928), (2096, 61488), (2196, 58688), (2304, 55937), (2358, 54656), (2562, 50304), (2688, 47946), (2751, 46848), (2928, 44016), (3144, 40992), (3416, 37728), (3668, 35136), (3843, 33536), (3904, 33012), (4032, 31964), (4192, 30744), (4392, 29344), (4716, 27328), (5124, 25152), (5376, 23973), (5502, 23424), (5856, 22008), (6288, 20496), (6832, 18864), (7336, 17568), (7686, 16768), (7808, 16506), (7991, 16128), (8064, 15982), (8253, 15616), (8384, 15372), (8784, 14672), (9432, 13664), (10248, 12576), (11004, 11712)]