321767680

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:412

約数の個数: 144

約数和(自身を含む): 846289584

約数和(自身を除く): 524521904

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 61, 64, 65, 80, 104, 122, 128, 130, 160, 208, 244, 256, 260, 305, 317, 320, 416, 488, 520, 610, 634, 640, 793, 832, 976, 1040, 1220, 1268, 1280, 1585, 1586, 1664, 1952, 2080, 2440, 2536, 3170, 3172, 3328, 3904, 3965, 4121, 4160, 4880, 5072, 6340, 6344, 7808, 7930, 8242, 8320, 9760, 10144, 12680, 12688, 15616, 15860, 16484, 16640, 19337, 19520, 20288, 20605, 25360, 25376, 31720, 32968, 38674, 39040, 40576, 41210, 50720, 50752, 63440, 65936, 77348, 78080, 81152, 82420, 96685, 101440, 101504, 126880, 131872, 154696, 164840, 193370, 202880, 203008, 251381, 253760, 263744, 309392, 329680, 386740, 405760, 502762, 507520, 527488, 618784, 659360, 773480, 1005524, 1015040, 1054976, 1237568, 1256905, 1318720, 1546960, 2011048, 2475136, 2513810, 2637440, 3093920, 4022096, 4950272, 5027620, 5274880, 6187840, 8044192, 10055240, 12375680, 16088384, 20110480, 24751360, 32176768, 40220960, 64353536, 80441920, 160883840, 321767680]

約数ペア:

[(1, 321767680), (2, 160883840), (4, 80441920), (5, 64353536), (8, 40220960), (10, 32176768), (13, 24751360), (16, 20110480), (20, 16088384), (26, 12375680), (32, 10055240), (40, 8044192), (52, 6187840), (61, 5274880), (64, 5027620), (65, 4950272), (80, 4022096), (104, 3093920), (122, 2637440), (128, 2513810), (130, 2475136), (160, 2011048), (208, 1546960), (244, 1318720), (256, 1256905), (260, 1237568), (305, 1054976), (317, 1015040), (320, 1005524), (416, 773480), (488, 659360), (520, 618784), (610, 527488), (634, 507520), (640, 502762), (793, 405760), (832, 386740), (976, 329680), (1040, 309392), (1220, 263744), (1268, 253760), (1280, 251381), (1585, 203008), (1586, 202880), (1664, 193370), (1952, 164840), (2080, 154696), (2440, 131872), (2536, 126880), (3170, 101504), (3172, 101440), (3328, 96685), (3904, 82420), (3965, 81152), (4121, 78080), (4160, 77348), (4880, 65936), (5072, 63440), (6340, 50752), (6344, 50720), (7808, 41210), (7930, 40576), (8242, 39040), (8320, 38674), (9760, 32968), (10144, 31720), (12680, 25376), (12688, 25360), (15616, 20605), (15860, 20288), (16484, 19520), (16640, 19337)]