640963176

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1279}}^1$

素因数の和:1471

約数の個数: 128

約数和(自身を含む): 1941504000

約数和(自身を除く): 1300540824

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 19, 21, 24, 28, 38, 42, 56, 57, 76, 84, 114, 133, 152, 157, 168, 228, 266, 314, 399, 456, 471, 532, 628, 798, 942, 1064, 1099, 1256, 1279, 1596, 1884, 2198, 2558, 2983, 3192, 3297, 3768, 3837, 4396, 5116, 5966, 6594, 7674, 8792, 8949, 8953, 10232, 11932, 13188, 15348, 17898, 17906, 20881, 23864, 24301, 26376, 26859, 30696, 35796, 35812, 41762, 48602, 53718, 62643, 71592, 71624, 72903, 83524, 97204, 107436, 125286, 145806, 167048, 170107, 194408, 200803, 214872, 250572, 291612, 340214, 401606, 501144, 510321, 583224, 602409, 680428, 803212, 1020642, 1204818, 1360856, 1405621, 1606424, 2041284, 2409636, 2811242, 3815257, 4082568, 4216863, 4819272, 5622484, 7630514, 8433726, 11244968, 11445771, 15261028, 16867452, 22891542, 26706799, 30522056, 33734904, 45783084, 53413598, 80120397, 91566168, 106827196, 160240794, 213654392, 320481588, 640963176]

約数ペア:

[(1, 640963176), (2, 320481588), (3, 213654392), (4, 160240794), (6, 106827196), (7, 91566168), (8, 80120397), (12, 53413598), (14, 45783084), (19, 33734904), (21, 30522056), (24, 26706799), (28, 22891542), (38, 16867452), (42, 15261028), (56, 11445771), (57, 11244968), (76, 8433726), (84, 7630514), (114, 5622484), (133, 4819272), (152, 4216863), (157, 4082568), (168, 3815257), (228, 2811242), (266, 2409636), (314, 2041284), (399, 1606424), (456, 1405621), (471, 1360856), (532, 1204818), (628, 1020642), (798, 803212), (942, 680428), (1064, 602409), (1099, 583224), (1256, 510321), (1279, 501144), (1596, 401606), (1884, 340214), (2198, 291612), (2558, 250572), (2983, 214872), (3192, 200803), (3297, 194408), (3768, 170107), (3837, 167048), (4396, 145806), (5116, 125286), (5966, 107436), (6594, 97204), (7674, 83524), (8792, 72903), (8949, 71624), (8953, 71592), (10232, 62643), (11932, 53718), (13188, 48602), (15348, 41762), (17898, 35812), (17906, 35796), (20881, 30696), (23864, 26859), (24301, 26376)]