217105280

素因数分解:

$2^7\times 5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:106

約数の個数: 256

約数和(自身を含む): 646272000

約数和(自身を除く): 429166720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 43, 46, 49, 56, 64, 70, 80, 86, 92, 98, 112, 115, 128, 140, 160, 161, 172, 184, 196, 215, 224, 230, 245, 280, 301, 320, 322, 343, 344, 368, 392, 430, 448, 460, 490, 560, 602, 640, 644, 686, 688, 736, 784, 805, 860, 896, 920, 980, 989, 1120, 1127, 1204, 1288, 1372, 1376, 1472, 1505, 1568, 1610, 1715, 1720, 1840, 1960, 1978, 2107, 2240, 2254, 2408, 2576, 2744, 2752, 2944, 3010, 3136, 3220, 3430, 3440, 3680, 3920, 3956, 4214, 4480, 4508, 4816, 4945, 5152, 5488, 5504, 5635, 6020, 6272, 6440, 6860, 6880, 6923, 7360, 7840, 7889, 7912, 8428, 9016, 9632, 9890, 10304, 10535, 10976, 11270, 12040, 12880, 13720, 13760, 13846, 14720, 14749, 15680, 15778, 15824, 16856, 18032, 19264, 19780, 20608, 21070, 21952, 22540, 24080, 25760, 27440, 27520, 27692, 29498, 31360, 31556, 31648, 33712, 34615, 36064, 38528, 39445, 39560, 42140, 43904, 45080, 48160, 48461, 51520, 54880, 55384, 58996, 63112, 63296, 67424, 69230, 72128, 73745, 78890, 79120, 84280, 90160, 96320, 96922, 103040, 109760, 110768, 117992, 126224, 126592, 134848, 138460, 144256, 147490, 157780, 158240, 168560, 180320, 192640, 193844, 219520, 221536, 235984, 242305, 252448, 269696, 276920, 294980, 315560, 316480, 337120, 339227, 360640, 387688, 443072, 471968, 484610, 504896, 553840, 589960, 631120, 632960, 674240, 678454, 721280, 775376, 886144, 943936, 969220, 1009792, 1107680, 1179920, 1262240, 1348480, 1356908, 1550752, 1696135, 1887872, 1938440, 2215360, 2359840, 2524480, 2713816, 3101504, 3392270, 3876880, 4430720, 4719680, 5048960, 5427632, 6203008, 6784540, 7753760, 9439360, 10855264, 13569080, 15507520, 21710528, 27138160, 31015040, 43421056, 54276320, 108552640, 217105280]

約数ペア:

[(1, 217105280), (2, 108552640), (4, 54276320), (5, 43421056), (7, 31015040), (8, 27138160), (10, 21710528), (14, 15507520), (16, 13569080), (20, 10855264), (23, 9439360), (28, 7753760), (32, 6784540), (35, 6203008), (40, 5427632), (43, 5048960), (46, 4719680), (49, 4430720), (56, 3876880), (64, 3392270), (70, 3101504), (80, 2713816), (86, 2524480), (92, 2359840), (98, 2215360), (112, 1938440), (115, 1887872), (128, 1696135), (140, 1550752), (160, 1356908), (161, 1348480), (172, 1262240), (184, 1179920), (196, 1107680), (215, 1009792), (224, 969220), (230, 943936), (245, 886144), (280, 775376), (301, 721280), (320, 678454), (322, 674240), (343, 632960), (344, 631120), (368, 589960), (392, 553840), (430, 504896), (448, 484610), (460, 471968), (490, 443072), (560, 387688), (602, 360640), (640, 339227), (644, 337120), (686, 316480), (688, 315560), (736, 294980), (784, 276920), (805, 269696), (860, 252448), (896, 242305), (920, 235984), (980, 221536), (989, 219520), (1120, 193844), (1127, 192640), (1204, 180320), (1288, 168560), (1372, 158240), (1376, 157780), (1472, 147490), (1505, 144256), (1568, 138460), (1610, 134848), (1715, 126592), (1720, 126224), (1840, 117992), (1960, 110768), (1978, 109760), (2107, 103040), (2240, 96922), (2254, 96320), (2408, 90160), (2576, 84280), (2744, 79120), (2752, 78890), (2944, 73745), (3010, 72128), (3136, 69230), (3220, 67424), (3430, 63296), (3440, 63112), (3680, 58996), (3920, 55384), (3956, 54880), (4214, 51520), (4480, 48461), (4508, 48160), (4816, 45080), (4945, 43904), (5152, 42140), (5488, 39560), (5504, 39445), (5635, 38528), (6020, 36064), (6272, 34615), (6440, 33712), (6860, 31648), (6880, 31556), (6923, 31360), (7360, 29498), (7840, 27692), (7889, 27520), (7912, 27440), (8428, 25760), (9016, 24080), (9632, 22540), (9890, 21952), (10304, 21070), (10535, 20608), (10976, 19780), (11270, 19264), (12040, 18032), (12880, 16856), (13720, 15824), (13760, 15778), (13846, 15680), (14720, 14749)]