638918720

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{569}}^1$

素因数の和:637

約数の個数: 168

約数和(自身を含む): 1733016600

約数和(自身を除く): 1094097880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 32, 40, 44, 55, 58, 64, 80, 88, 110, 116, 121, 145, 160, 176, 220, 232, 242, 290, 319, 320, 352, 440, 464, 484, 569, 580, 605, 638, 704, 880, 928, 968, 1138, 1160, 1210, 1276, 1595, 1760, 1856, 1936, 2276, 2320, 2420, 2552, 2845, 3190, 3509, 3520, 3872, 4552, 4640, 4840, 5104, 5690, 6259, 6380, 7018, 7744, 9104, 9280, 9680, 10208, 11380, 12518, 12760, 14036, 16501, 17545, 18208, 19360, 20416, 22760, 25036, 25520, 28072, 31295, 33002, 35090, 36416, 38720, 45520, 50072, 51040, 56144, 62590, 66004, 68849, 70180, 82505, 91040, 100144, 102080, 112288, 125180, 132008, 137698, 140360, 165010, 181511, 182080, 200288, 224576, 250360, 264016, 275396, 280720, 330020, 344245, 363022, 400576, 500720, 528032, 550792, 561440, 660040, 688490, 726044, 907555, 1001440, 1056064, 1101584, 1122880, 1320080, 1376980, 1452088, 1815110, 1996621, 2002880, 2203168, 2640160, 2753960, 2904176, 3630220, 3993242, 4406336, 5280320, 5507920, 5808352, 7260440, 7986484, 9983105, 11015840, 11616704, 14520880, 15972968, 19966210, 22031680, 29041760, 31945936, 39932420, 58083520, 63891872, 79864840, 127783744, 159729680, 319459360, 638918720]

約数ペア:

[(1, 638918720), (2, 319459360), (4, 159729680), (5, 127783744), (8, 79864840), (10, 63891872), (11, 58083520), (16, 39932420), (20, 31945936), (22, 29041760), (29, 22031680), (32, 19966210), (40, 15972968), (44, 14520880), (55, 11616704), (58, 11015840), (64, 9983105), (80, 7986484), (88, 7260440), (110, 5808352), (116, 5507920), (121, 5280320), (145, 4406336), (160, 3993242), (176, 3630220), (220, 2904176), (232, 2753960), (242, 2640160), (290, 2203168), (319, 2002880), (320, 1996621), (352, 1815110), (440, 1452088), (464, 1376980), (484, 1320080), (569, 1122880), (580, 1101584), (605, 1056064), (638, 1001440), (704, 907555), (880, 726044), (928, 688490), (968, 660040), (1138, 561440), (1160, 550792), (1210, 528032), (1276, 500720), (1595, 400576), (1760, 363022), (1856, 344245), (1936, 330020), (2276, 280720), (2320, 275396), (2420, 264016), (2552, 250360), (2845, 224576), (3190, 200288), (3509, 182080), (3520, 181511), (3872, 165010), (4552, 140360), (4640, 137698), (4840, 132008), (5104, 125180), (5690, 112288), (6259, 102080), (6380, 100144), (7018, 91040), (7744, 82505), (9104, 70180), (9280, 68849), (9680, 66004), (10208, 62590), (11380, 56144), (12518, 51040), (12760, 50072), (14036, 45520), (16501, 38720), (17545, 36416), (18208, 35090), (19360, 33002), (20416, 31295), (22760, 28072), (25036, 25520)]