28945280

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1$

素因数の和:117

約数の個数: 192

約数和(自身を含む): 87907680

約数和(自身を除く): 58962400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 71, 80, 91, 98, 104, 112, 128, 130, 140, 142, 160, 182, 196, 208, 224, 245, 260, 280, 284, 320, 355, 364, 392, 416, 448, 455, 490, 497, 520, 560, 568, 637, 640, 710, 728, 784, 832, 896, 910, 923, 980, 994, 1040, 1120, 1136, 1274, 1420, 1456, 1568, 1664, 1820, 1846, 1960, 1988, 2080, 2240, 2272, 2485, 2548, 2840, 2912, 3136, 3185, 3479, 3640, 3692, 3920, 3976, 4160, 4480, 4544, 4615, 4970, 5096, 5680, 5824, 6272, 6370, 6461, 6958, 7280, 7384, 7840, 7952, 8320, 9088, 9230, 9940, 10192, 11360, 11648, 12740, 12922, 13916, 14560, 14768, 15680, 15904, 17395, 18460, 19880, 20384, 22720, 25480, 25844, 27832, 29120, 29536, 31360, 31808, 32305, 34790, 36920, 39760, 40768, 45227, 45440, 50960, 51688, 55664, 58240, 59072, 63616, 64610, 69580, 73840, 79520, 81536, 90454, 101920, 103376, 111328, 118144, 129220, 139160, 147680, 159040, 180908, 203840, 206752, 222656, 226135, 258440, 278320, 295360, 318080, 361816, 407680, 413504, 445312, 452270, 516880, 556640, 590720, 723632, 827008, 904540, 1033760, 1113280, 1447264, 1809080, 2067520, 2226560, 2894528, 3618160, 4135040, 5789056, 7236320, 14472640, 28945280]

約数ペア:

[(1, 28945280), (2, 14472640), (4, 7236320), (5, 5789056), (7, 4135040), (8, 3618160), (10, 2894528), (13, 2226560), (14, 2067520), (16, 1809080), (20, 1447264), (26, 1113280), (28, 1033760), (32, 904540), (35, 827008), (40, 723632), (49, 590720), (52, 556640), (56, 516880), (64, 452270), (65, 445312), (70, 413504), (71, 407680), (80, 361816), (91, 318080), (98, 295360), (104, 278320), (112, 258440), (128, 226135), (130, 222656), (140, 206752), (142, 203840), (160, 180908), (182, 159040), (196, 147680), (208, 139160), (224, 129220), (245, 118144), (260, 111328), (280, 103376), (284, 101920), (320, 90454), (355, 81536), (364, 79520), (392, 73840), (416, 69580), (448, 64610), (455, 63616), (490, 59072), (497, 58240), (520, 55664), (560, 51688), (568, 50960), (637, 45440), (640, 45227), (710, 40768), (728, 39760), (784, 36920), (832, 34790), (896, 32305), (910, 31808), (923, 31360), (980, 29536), (994, 29120), (1040, 27832), (1120, 25844), (1136, 25480), (1274, 22720), (1420, 20384), (1456, 19880), (1568, 18460), (1664, 17395), (1820, 15904), (1846, 15680), (1960, 14768), (1988, 14560), (2080, 13916), (2240, 12922), (2272, 12740), (2485, 11648), (2548, 11360), (2840, 10192), (2912, 9940), (3136, 9230), (3185, 9088), (3479, 8320), (3640, 7952), (3692, 7840), (3920, 7384), (3976, 7280), (4160, 6958), (4480, 6461), (4544, 6370), (4615, 6272), (4970, 5824), (5096, 5680)]