399978880

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:209

約数の個数: 256

約数和(自身を含む): 1190707200

約数和(自身を除く): 790728320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 37, 38, 40, 56, 64, 70, 74, 76, 80, 95, 112, 127, 128, 133, 140, 148, 152, 160, 185, 190, 224, 254, 259, 266, 280, 296, 304, 320, 370, 380, 448, 508, 518, 532, 560, 592, 608, 635, 640, 665, 703, 740, 760, 889, 896, 1016, 1036, 1064, 1120, 1184, 1216, 1270, 1295, 1330, 1406, 1480, 1520, 1778, 2032, 2072, 2128, 2240, 2368, 2413, 2432, 2540, 2590, 2660, 2812, 2960, 3040, 3515, 3556, 4064, 4144, 4256, 4445, 4480, 4699, 4736, 4826, 4921, 5080, 5180, 5320, 5624, 5920, 6080, 7030, 7112, 8128, 8288, 8512, 8890, 9398, 9652, 9842, 10160, 10360, 10640, 11248, 11840, 12065, 12160, 14060, 14224, 16256, 16576, 16891, 17024, 17780, 18796, 19304, 19684, 20320, 20720, 21280, 22496, 23495, 23680, 24130, 24605, 28120, 28448, 32893, 33152, 33782, 35560, 37592, 38608, 39368, 40640, 41440, 42560, 44992, 46990, 48260, 49210, 56240, 56896, 65786, 67564, 71120, 75184, 77216, 78736, 81280, 82880, 84455, 85120, 89281, 89984, 93980, 96520, 98420, 112480, 113792, 131572, 135128, 142240, 150368, 154432, 157472, 164465, 165760, 168910, 178562, 187960, 193040, 196840, 224960, 263144, 270256, 284480, 300736, 308864, 314944, 328930, 337820, 357124, 375920, 386080, 393680, 446405, 449920, 526288, 540512, 568960, 601472, 624967, 629888, 657860, 675640, 714248, 751840, 772160, 787360, 892810, 1052576, 1081024, 1249934, 1315720, 1351280, 1428496, 1503680, 1544320, 1574720, 1785620, 2105152, 2162048, 2499868, 2631440, 2702560, 2856992, 3007360, 3124835, 3149440, 3571240, 4210304, 4999736, 5262880, 5405120, 5713984, 6249670, 7142480, 9999472, 10525760, 10810240, 11427968, 12499340, 14284960, 19998944, 21051520, 24998680, 28569920, 39997888, 49997360, 57139840, 79995776, 99994720, 199989440, 399978880]

約数ペア:

[(1, 399978880), (2, 199989440), (4, 99994720), (5, 79995776), (7, 57139840), (8, 49997360), (10, 39997888), (14, 28569920), (16, 24998680), (19, 21051520), (20, 19998944), (28, 14284960), (32, 12499340), (35, 11427968), (37, 10810240), (38, 10525760), (40, 9999472), (56, 7142480), (64, 6249670), (70, 5713984), (74, 5405120), (76, 5262880), (80, 4999736), (95, 4210304), (112, 3571240), (127, 3149440), (128, 3124835), (133, 3007360), (140, 2856992), (148, 2702560), (152, 2631440), (160, 2499868), (185, 2162048), (190, 2105152), (224, 1785620), (254, 1574720), (259, 1544320), (266, 1503680), (280, 1428496), (296, 1351280), (304, 1315720), (320, 1249934), (370, 1081024), (380, 1052576), (448, 892810), (508, 787360), (518, 772160), (532, 751840), (560, 714248), (592, 675640), (608, 657860), (635, 629888), (640, 624967), (665, 601472), (703, 568960), (740, 540512), (760, 526288), (889, 449920), (896, 446405), (1016, 393680), (1036, 386080), (1064, 375920), (1120, 357124), (1184, 337820), (1216, 328930), (1270, 314944), (1295, 308864), (1330, 300736), (1406, 284480), (1480, 270256), (1520, 263144), (1778, 224960), (2032, 196840), (2072, 193040), (2128, 187960), (2240, 178562), (2368, 168910), (2413, 165760), (2432, 164465), (2540, 157472), (2590, 154432), (2660, 150368), (2812, 142240), (2960, 135128), (3040, 131572), (3515, 113792), (3556, 112480), (4064, 98420), (4144, 96520), (4256, 93980), (4445, 89984), (4480, 89281), (4699, 85120), (4736, 84455), (4826, 82880), (4921, 81280), (5080, 78736), (5180, 77216), (5320, 75184), (5624, 71120), (5920, 67564), (6080, 65786), (7030, 56896), (7112, 56240), (8128, 49210), (8288, 48260), (8512, 46990), (8890, 44992), (9398, 42560), (9652, 41440), (9842, 40640), (10160, 39368), (10360, 38608), (10640, 37592), (11248, 35560), (11840, 33782), (12065, 33152), (12160, 32893), (14060, 28448), (14224, 28120), (16256, 24605), (16576, 24130), (16891, 23680), (17024, 23495), (17780, 22496), (18796, 21280), (19304, 20720), (19684, 20320)]