661256960

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{811}}^1$

素因数の和:859

約数の個数: 216

約数和(自身を含む): 1986694416

約数和(自身を除く): 1325437456

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, 80, 91, 98, 104, 112, 128, 130, 140, 160, 182, 196, 208, 224, 245, 256, 260, 280, 320, 364, 392, 416, 448, 455, 490, 520, 560, 637, 640, 728, 784, 811, 832, 896, 910, 980, 1040, 1120, 1274, 1280, 1456, 1568, 1622, 1664, 1792, 1820, 1960, 2080, 2240, 2548, 2912, 3136, 3185, 3244, 3328, 3640, 3920, 4055, 4160, 4480, 5096, 5677, 5824, 6272, 6370, 6488, 7280, 7840, 8110, 8320, 8960, 10192, 10543, 11354, 11648, 12544, 12740, 12976, 14560, 15680, 16220, 16640, 20384, 21086, 22708, 23296, 25480, 25952, 28385, 29120, 31360, 32440, 39739, 40768, 42172, 45416, 50960, 51904, 52715, 56770, 58240, 62720, 64880, 73801, 79478, 81536, 84344, 90832, 101920, 103808, 105430, 113540, 116480, 129760, 147602, 158956, 163072, 168688, 181664, 198695, 203840, 207616, 210860, 227080, 259520, 295204, 317912, 337376, 363328, 369005, 397390, 407680, 421720, 454160, 516607, 519040, 590408, 635824, 674752, 726656, 738010, 794780, 815360, 843440, 908320, 1033214, 1038080, 1180816, 1271648, 1349504, 1453312, 1476020, 1589560, 1686880, 1816640, 2066428, 2361632, 2543296, 2583035, 2699008, 2952040, 3179120, 3373760, 3633280, 4132856, 4723264, 5086592, 5166070, 5904080, 6358240, 6747520, 7266560, 8265712, 9446528, 10173184, 10332140, 11808160, 12716480, 13495040, 16531424, 18893056, 20664280, 23616320, 25432960, 33062848, 41328560, 47232640, 50865920, 66125696, 82657120, 94465280, 132251392, 165314240, 330628480, 661256960]

約数ペア:

[(1, 661256960), (2, 330628480), (4, 165314240), (5, 132251392), (7, 94465280), (8, 82657120), (10, 66125696), (13, 50865920), (14, 47232640), (16, 41328560), (20, 33062848), (26, 25432960), (28, 23616320), (32, 20664280), (35, 18893056), (40, 16531424), (49, 13495040), (52, 12716480), (56, 11808160), (64, 10332140), (65, 10173184), (70, 9446528), (80, 8265712), (91, 7266560), (98, 6747520), (104, 6358240), (112, 5904080), (128, 5166070), (130, 5086592), (140, 4723264), (160, 4132856), (182, 3633280), (196, 3373760), (208, 3179120), (224, 2952040), (245, 2699008), (256, 2583035), (260, 2543296), (280, 2361632), (320, 2066428), (364, 1816640), (392, 1686880), (416, 1589560), (448, 1476020), (455, 1453312), (490, 1349504), (520, 1271648), (560, 1180816), (637, 1038080), (640, 1033214), (728, 908320), (784, 843440), (811, 815360), (832, 794780), (896, 738010), (910, 726656), (980, 674752), (1040, 635824), (1120, 590408), (1274, 519040), (1280, 516607), (1456, 454160), (1568, 421720), (1622, 407680), (1664, 397390), (1792, 369005), (1820, 363328), (1960, 337376), (2080, 317912), (2240, 295204), (2548, 259520), (2912, 227080), (3136, 210860), (3185, 207616), (3244, 203840), (3328, 198695), (3640, 181664), (3920, 168688), (4055, 163072), (4160, 158956), (4480, 147602), (5096, 129760), (5677, 116480), (5824, 113540), (6272, 105430), (6370, 103808), (6488, 101920), (7280, 90832), (7840, 84344), (8110, 81536), (8320, 79478), (8960, 73801), (10192, 64880), (10543, 62720), (11354, 58240), (11648, 56770), (12544, 52715), (12740, 51904), (12976, 50960), (14560, 45416), (15680, 42172), (16220, 40768), (16640, 39739), (20384, 32440), (21086, 31360), (22708, 29120), (23296, 28385), (25480, 25952)]