638781264

素因数分解:

$2^4\times 3^2\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{601}}^1$

素因数の和:698

約数の個数: 180

約数和(自身を含む): 2000529076

約数和(自身を除く): 1361747812

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 33, 36, 44, 48, 61, 66, 72, 88, 99, 121, 122, 132, 144, 176, 183, 198, 242, 244, 264, 363, 366, 396, 484, 488, 528, 549, 601, 671, 726, 732, 792, 968, 976, 1089, 1098, 1202, 1342, 1452, 1464, 1584, 1803, 1936, 2013, 2178, 2196, 2404, 2684, 2904, 2928, 3606, 4026, 4356, 4392, 4808, 5368, 5409, 5808, 6039, 6611, 7212, 7381, 8052, 8712, 8784, 9616, 10736, 10818, 12078, 13222, 14424, 14762, 16104, 17424, 19833, 21636, 22143, 24156, 26444, 28848, 29524, 32208, 36661, 39666, 43272, 44286, 48312, 52888, 59048, 59499, 66429, 72721, 73322, 79332, 86544, 88572, 96624, 105776, 109983, 118096, 118998, 132858, 145442, 146644, 158664, 177144, 218163, 219966, 237996, 265716, 290884, 293288, 317328, 329949, 354288, 403271, 436326, 439932, 475992, 531432, 581768, 586576, 654489, 659898, 806542, 872652, 879864, 951984, 1062864, 1163536, 1209813, 1308978, 1319796, 1613084, 1745304, 1759728, 2419626, 2617956, 2639592, 3226168, 3490608, 3629439, 4435981, 4839252, 5235912, 5279184, 6452336, 7258878, 8871962, 9678504, 10471824, 13307943, 14517756, 17743924, 19357008, 26615886, 29035512, 35487848, 39923829, 53231772, 58071024, 70975696, 79847658, 106463544, 159695316, 212927088, 319390632, 638781264]

約数ペア:

[(1, 638781264), (2, 319390632), (3, 212927088), (4, 159695316), (6, 106463544), (8, 79847658), (9, 70975696), (11, 58071024), (12, 53231772), (16, 39923829), (18, 35487848), (22, 29035512), (24, 26615886), (33, 19357008), (36, 17743924), (44, 14517756), (48, 13307943), (61, 10471824), (66, 9678504), (72, 8871962), (88, 7258878), (99, 6452336), (121, 5279184), (122, 5235912), (132, 4839252), (144, 4435981), (176, 3629439), (183, 3490608), (198, 3226168), (242, 2639592), (244, 2617956), (264, 2419626), (363, 1759728), (366, 1745304), (396, 1613084), (484, 1319796), (488, 1308978), (528, 1209813), (549, 1163536), (601, 1062864), (671, 951984), (726, 879864), (732, 872652), (792, 806542), (968, 659898), (976, 654489), (1089, 586576), (1098, 581768), (1202, 531432), (1342, 475992), (1452, 439932), (1464, 436326), (1584, 403271), (1803, 354288), (1936, 329949), (2013, 317328), (2178, 293288), (2196, 290884), (2404, 265716), (2684, 237996), (2904, 219966), (2928, 218163), (3606, 177144), (4026, 158664), (4356, 146644), (4392, 145442), (4808, 132858), (5368, 118998), (5409, 118096), (5808, 109983), (6039, 105776), (6611, 96624), (7212, 88572), (7381, 86544), (8052, 79332), (8712, 73322), (8784, 72721), (9616, 66429), (10736, 59499), (10818, 59048), (12078, 52888), (13222, 48312), (14424, 44286), (14762, 43272), (16104, 39666), (17424, 36661), (19833, 32208), (21636, 29524), (22143, 28848), (24156, 26444)]