81401600

素因数分解:

$2^8\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:135

約数の個数: 216

約数和(自身を含む): 243317760

約数和(自身を除く): 161916160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 32, 35, 40, 46, 50, 56, 64, 70, 79, 80, 92, 100, 112, 115, 128, 140, 158, 160, 161, 175, 184, 200, 224, 230, 256, 280, 316, 320, 322, 350, 368, 395, 400, 448, 460, 553, 560, 575, 632, 640, 644, 700, 736, 790, 800, 805, 896, 920, 1106, 1120, 1150, 1264, 1280, 1288, 1400, 1472, 1580, 1600, 1610, 1792, 1817, 1840, 1975, 2212, 2240, 2300, 2528, 2576, 2765, 2800, 2944, 3160, 3200, 3220, 3634, 3680, 3950, 4025, 4424, 4480, 4600, 5056, 5152, 5530, 5600, 5888, 6320, 6400, 6440, 7268, 7360, 7900, 8050, 8848, 8960, 9085, 9200, 10112, 10304, 11060, 11200, 12640, 12719, 12880, 13825, 14536, 14720, 15800, 16100, 17696, 18170, 18400, 20224, 20608, 22120, 22400, 25280, 25438, 25760, 27650, 29072, 29440, 31600, 32200, 35392, 36340, 36800, 41216, 44240, 44800, 45425, 50560, 50876, 51520, 55300, 58144, 63200, 63595, 64400, 70784, 72680, 73600, 88480, 90850, 101120, 101752, 103040, 110600, 116288, 126400, 127190, 128800, 141568, 145360, 147200, 176960, 181700, 203504, 206080, 221200, 232576, 252800, 254380, 257600, 290720, 317975, 353920, 363400, 407008, 442400, 465152, 505600, 508760, 515200, 581440, 635950, 707840, 726800, 814016, 884800, 1017520, 1030400, 1162880, 1271900, 1453600, 1628032, 1769600, 2035040, 2325760, 2543800, 2907200, 3256064, 3539200, 4070080, 5087600, 5814400, 8140160, 10175200, 11628800, 16280320, 20350400, 40700800, 81401600]

約数ペア:

[(1, 81401600), (2, 40700800), (4, 20350400), (5, 16280320), (7, 11628800), (8, 10175200), (10, 8140160), (14, 5814400), (16, 5087600), (20, 4070080), (23, 3539200), (25, 3256064), (28, 2907200), (32, 2543800), (35, 2325760), (40, 2035040), (46, 1769600), (50, 1628032), (56, 1453600), (64, 1271900), (70, 1162880), (79, 1030400), (80, 1017520), (92, 884800), (100, 814016), (112, 726800), (115, 707840), (128, 635950), (140, 581440), (158, 515200), (160, 508760), (161, 505600), (175, 465152), (184, 442400), (200, 407008), (224, 363400), (230, 353920), (256, 317975), (280, 290720), (316, 257600), (320, 254380), (322, 252800), (350, 232576), (368, 221200), (395, 206080), (400, 203504), (448, 181700), (460, 176960), (553, 147200), (560, 145360), (575, 141568), (632, 128800), (640, 127190), (644, 126400), (700, 116288), (736, 110600), (790, 103040), (800, 101752), (805, 101120), (896, 90850), (920, 88480), (1106, 73600), (1120, 72680), (1150, 70784), (1264, 64400), (1280, 63595), (1288, 63200), (1400, 58144), (1472, 55300), (1580, 51520), (1600, 50876), (1610, 50560), (1792, 45425), (1817, 44800), (1840, 44240), (1975, 41216), (2212, 36800), (2240, 36340), (2300, 35392), (2528, 32200), (2576, 31600), (2765, 29440), (2800, 29072), (2944, 27650), (3160, 25760), (3200, 25438), (3220, 25280), (3634, 22400), (3680, 22120), (3950, 20608), (4025, 20224), (4424, 18400), (4480, 18170), (4600, 17696), (5056, 16100), (5152, 15800), (5530, 14720), (5600, 14536), (5888, 13825), (6320, 12880), (6400, 12719), (6440, 12640), (7268, 11200), (7360, 11060), (7900, 10304), (8050, 10112), (8848, 9200), (8960, 9085)]