28439040

素因数分解:

$2^9\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^2$

素因数の和:79

約数の個数: 240

約数和(自身を含む): 108618048

約数和(自身を除く): 80179008

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 40, 42, 46, 48, 56, 60, 64, 69, 70, 80, 84, 92, 96, 105, 112, 115, 120, 128, 138, 140, 160, 161, 168, 184, 192, 210, 224, 230, 240, 256, 276, 280, 320, 322, 336, 345, 368, 384, 420, 448, 460, 480, 483, 512, 529, 552, 560, 640, 644, 672, 690, 736, 768, 805, 840, 896, 920, 960, 966, 1058, 1104, 1120, 1280, 1288, 1344, 1380, 1472, 1536, 1587, 1610, 1680, 1792, 1840, 1920, 1932, 2116, 2208, 2240, 2415, 2560, 2576, 2645, 2688, 2760, 2944, 3174, 3220, 3360, 3584, 3680, 3703, 3840, 3864, 4232, 4416, 4480, 4830, 5152, 5290, 5376, 5520, 5888, 6348, 6440, 6720, 7360, 7406, 7680, 7728, 7935, 8464, 8832, 8960, 9660, 10304, 10580, 10752, 11040, 11109, 11776, 12696, 12880, 13440, 14720, 14812, 15456, 15870, 16928, 17664, 17920, 18515, 19320, 20608, 21160, 22080, 22218, 25392, 25760, 26880, 29440, 29624, 30912, 31740, 33856, 35328, 37030, 38640, 41216, 42320, 44160, 44436, 50784, 51520, 53760, 55545, 58880, 59248, 61824, 63480, 67712, 74060, 77280, 82432, 84640, 88320, 88872, 101568, 103040, 111090, 118496, 123648, 126960, 135424, 148120, 154560, 169280, 176640, 177744, 203136, 206080, 222180, 236992, 247296, 253920, 270848, 296240, 309120, 338560, 355488, 406272, 412160, 444360, 473984, 507840, 592480, 618240, 677120, 710976, 812544, 888720, 947968, 1015680, 1184960, 1236480, 1354240, 1421952, 1777440, 1895936, 2031360, 2369920, 2843904, 3554880, 4062720, 4739840, 5687808, 7109760, 9479680, 14219520, 28439040]

約数ペア:

[(1, 28439040), (2, 14219520), (3, 9479680), (4, 7109760), (5, 5687808), (6, 4739840), (7, 4062720), (8, 3554880), (10, 2843904), (12, 2369920), (14, 2031360), (15, 1895936), (16, 1777440), (20, 1421952), (21, 1354240), (23, 1236480), (24, 1184960), (28, 1015680), (30, 947968), (32, 888720), (35, 812544), (40, 710976), (42, 677120), (46, 618240), (48, 592480), (56, 507840), (60, 473984), (64, 444360), (69, 412160), (70, 406272), (80, 355488), (84, 338560), (92, 309120), (96, 296240), (105, 270848), (112, 253920), (115, 247296), (120, 236992), (128, 222180), (138, 206080), (140, 203136), (160, 177744), (161, 176640), (168, 169280), (184, 154560), (192, 148120), (210, 135424), (224, 126960), (230, 123648), (240, 118496), (256, 111090), (276, 103040), (280, 101568), (320, 88872), (322, 88320), (336, 84640), (345, 82432), (368, 77280), (384, 74060), (420, 67712), (448, 63480), (460, 61824), (480, 59248), (483, 58880), (512, 55545), (529, 53760), (552, 51520), (560, 50784), (640, 44436), (644, 44160), (672, 42320), (690, 41216), (736, 38640), (768, 37030), (805, 35328), (840, 33856), (896, 31740), (920, 30912), (960, 29624), (966, 29440), (1058, 26880), (1104, 25760), (1120, 25392), (1280, 22218), (1288, 22080), (1344, 21160), (1380, 20608), (1472, 19320), (1536, 18515), (1587, 17920), (1610, 17664), (1680, 16928), (1792, 15870), (1840, 15456), (1920, 14812), (1932, 14720), (2116, 13440), (2208, 12880), (2240, 12696), (2415, 11776), (2560, 11109), (2576, 11040), (2645, 10752), (2688, 10580), (2760, 10304), (2944, 9660), (3174, 8960), (3220, 8832), (3360, 8464), (3584, 7935), (3680, 7728), (3703, 7680), (3840, 7406), (3864, 7360), (4232, 6720), (4416, 6440), (4480, 6348), (4830, 5888), (5152, 5520), (5290, 5376)]