31397760

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:130

約数の個数: 256

約数和(自身を含む): 117504000

約数和(自身を除く): 86106240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 48, 54, 60, 64, 69, 72, 79, 80, 90, 92, 96, 108, 115, 120, 128, 135, 138, 144, 158, 160, 180, 184, 192, 207, 216, 230, 237, 240, 270, 276, 288, 316, 320, 345, 360, 368, 384, 395, 414, 432, 460, 474, 480, 540, 552, 576, 621, 632, 640, 690, 711, 720, 736, 790, 828, 864, 920, 948, 960, 1035, 1080, 1104, 1152, 1185, 1242, 1264, 1380, 1422, 1440, 1472, 1580, 1656, 1728, 1817, 1840, 1896, 1920, 2070, 2133, 2160, 2208, 2370, 2484, 2528, 2760, 2844, 2880, 2944, 3105, 3160, 3312, 3456, 3555, 3634, 3680, 3792, 4140, 4266, 4320, 4416, 4740, 4968, 5056, 5451, 5520, 5688, 5760, 6210, 6320, 6624, 7110, 7268, 7360, 7584, 8280, 8532, 8640, 8832, 9085, 9480, 9936, 10112, 10665, 10902, 11040, 11376, 12420, 12640, 13248, 14220, 14536, 14720, 15168, 16353, 16560, 17064, 17280, 18170, 18960, 19872, 21330, 21804, 22080, 22752, 24840, 25280, 26496, 27255, 28440, 29072, 30336, 32706, 33120, 34128, 36340, 37920, 39744, 42660, 43608, 44160, 45504, 49059, 49680, 50560, 54510, 56880, 58144, 65412, 66240, 68256, 72680, 75840, 79488, 81765, 85320, 87216, 91008, 98118, 99360, 109020, 113760, 116288, 130824, 132480, 136512, 145360, 151680, 163530, 170640, 174432, 196236, 198720, 218040, 227520, 232576, 245295, 261648, 273024, 290720, 327060, 341280, 348864, 392472, 397440, 436080, 455040, 490590, 523296, 581440, 654120, 682560, 697728, 784944, 872160, 981180, 1046592, 1162880, 1308240, 1365120, 1569888, 1744320, 1962360, 2093184, 2616480, 3139776, 3488640, 3924720, 5232960, 6279552, 7849440, 10465920, 15698880, 31397760]

約数ペア:

[(1, 31397760), (2, 15698880), (3, 10465920), (4, 7849440), (5, 6279552), (6, 5232960), (8, 3924720), (9, 3488640), (10, 3139776), (12, 2616480), (15, 2093184), (16, 1962360), (18, 1744320), (20, 1569888), (23, 1365120), (24, 1308240), (27, 1162880), (30, 1046592), (32, 981180), (36, 872160), (40, 784944), (45, 697728), (46, 682560), (48, 654120), (54, 581440), (60, 523296), (64, 490590), (69, 455040), (72, 436080), (79, 397440), (80, 392472), (90, 348864), (92, 341280), (96, 327060), (108, 290720), (115, 273024), (120, 261648), (128, 245295), (135, 232576), (138, 227520), (144, 218040), (158, 198720), (160, 196236), (180, 174432), (184, 170640), (192, 163530), (207, 151680), (216, 145360), (230, 136512), (237, 132480), (240, 130824), (270, 116288), (276, 113760), (288, 109020), (316, 99360), (320, 98118), (345, 91008), (360, 87216), (368, 85320), (384, 81765), (395, 79488), (414, 75840), (432, 72680), (460, 68256), (474, 66240), (480, 65412), (540, 58144), (552, 56880), (576, 54510), (621, 50560), (632, 49680), (640, 49059), (690, 45504), (711, 44160), (720, 43608), (736, 42660), (790, 39744), (828, 37920), (864, 36340), (920, 34128), (948, 33120), (960, 32706), (1035, 30336), (1080, 29072), (1104, 28440), (1152, 27255), (1185, 26496), (1242, 25280), (1264, 24840), (1380, 22752), (1422, 22080), (1440, 21804), (1472, 21330), (1580, 19872), (1656, 18960), (1728, 18170), (1817, 17280), (1840, 17064), (1896, 16560), (1920, 16353), (2070, 15168), (2133, 14720), (2160, 14536), (2208, 14220), (2370, 13248), (2484, 12640), (2528, 12420), (2760, 11376), (2844, 11040), (2880, 10902), (2944, 10665), (3105, 10112), (3160, 9936), (3312, 9480), (3456, 9085), (3555, 8832), (3634, 8640), (3680, 8532), (3792, 8280), (4140, 7584), (4266, 7360), (4320, 7268), (4416, 7110), (4740, 6624), (4968, 6320), (5056, 6210), (5451, 5760), (5520, 5688)]