638640240

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{3919}}^1$

素因数の和:4039

約数の個数: 160

約数和(自身を含む): 2286520320

約数和(自身を除く): 1647880080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 97, 105, 112, 120, 140, 168, 194, 210, 240, 280, 291, 336, 388, 420, 485, 560, 582, 679, 776, 840, 970, 1164, 1358, 1455, 1552, 1680, 1940, 2037, 2328, 2716, 2910, 3395, 3880, 3919, 4074, 4656, 5432, 5820, 6790, 7760, 7838, 8148, 10185, 10864, 11640, 11757, 13580, 15676, 16296, 19595, 20370, 23280, 23514, 27160, 27433, 31352, 32592, 39190, 40740, 47028, 54320, 54866, 58785, 62704, 78380, 81480, 82299, 94056, 109732, 117570, 137165, 156760, 162960, 164598, 188112, 219464, 235140, 274330, 313520, 329196, 380143, 411495, 438928, 470280, 548660, 658392, 760286, 822990, 940560, 1097320, 1140429, 1316784, 1520572, 1645980, 1900715, 2194640, 2280858, 2661001, 3041144, 3291960, 3801430, 4561716, 5322002, 5702145, 6082288, 6583920, 7602860, 7983003, 9123432, 10644004, 11404290, 13305005, 15205720, 15966006, 18246864, 21288008, 22808580, 26610010, 30411440, 31932012, 39915015, 42576016, 45617160, 53220020, 63864024, 79830030, 91234320, 106440040, 127728048, 159660060, 212880080, 319320120, 638640240]

約数ペア:

[(1, 638640240), (2, 319320120), (3, 212880080), (4, 159660060), (5, 127728048), (6, 106440040), (7, 91234320), (8, 79830030), (10, 63864024), (12, 53220020), (14, 45617160), (15, 42576016), (16, 39915015), (20, 31932012), (21, 30411440), (24, 26610010), (28, 22808580), (30, 21288008), (35, 18246864), (40, 15966006), (42, 15205720), (48, 13305005), (56, 11404290), (60, 10644004), (70, 9123432), (80, 7983003), (84, 7602860), (97, 6583920), (105, 6082288), (112, 5702145), (120, 5322002), (140, 4561716), (168, 3801430), (194, 3291960), (210, 3041144), (240, 2661001), (280, 2280858), (291, 2194640), (336, 1900715), (388, 1645980), (420, 1520572), (485, 1316784), (560, 1140429), (582, 1097320), (679, 940560), (776, 822990), (840, 760286), (970, 658392), (1164, 548660), (1358, 470280), (1455, 438928), (1552, 411495), (1680, 380143), (1940, 329196), (2037, 313520), (2328, 274330), (2716, 235140), (2910, 219464), (3395, 188112), (3880, 164598), (3919, 162960), (4074, 156760), (4656, 137165), (5432, 117570), (5820, 109732), (6790, 94056), (7760, 82299), (7838, 81480), (8148, 78380), (10185, 62704), (10864, 58785), (11640, 54866), (11757, 54320), (13580, 47028), (15676, 40740), (16296, 39190), (19595, 32592), (20370, 31352), (23280, 27433), (23514, 27160)]