2021560720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1\times {\mathrm{991}}^1$

素因数の和:1640

約数の個数: 80

約数和(自身を含む): 4822405632

約数和(自身を除く): 2800844912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 593, 688, 860, 991, 1186, 1720, 1982, 2372, 2965, 3440, 3964, 4744, 4955, 5930, 7928, 9488, 9910, 11860, 15856, 19820, 23720, 25499, 39640, 42613, 47440, 50998, 79280, 85226, 101996, 127495, 170452, 203992, 213065, 254990, 340904, 407984, 426130, 509980, 587663, 681808, 852260, 1019960, 1175326, 1704520, 2039920, 2350652, 2938315, 3409040, 4701304, 5876630, 9402608, 11753260, 23506520, 25269509, 47013040, 50539018, 101078036, 126347545, 202156072, 252695090, 404312144, 505390180, 1010780360, 2021560720]

約数ペア:

[(1, 2021560720), (2, 1010780360), (4, 505390180), (5, 404312144), (8, 252695090), (10, 202156072), (16, 126347545), (20, 101078036), (40, 50539018), (43, 47013040), (80, 25269509), (86, 23506520), (172, 11753260), (215, 9402608), (344, 5876630), (430, 4701304), (593, 3409040), (688, 2938315), (860, 2350652), (991, 2039920), (1186, 1704520), (1720, 1175326), (1982, 1019960), (2372, 852260), (2965, 681808), (3440, 587663), (3964, 509980), (4744, 426130), (4955, 407984), (5930, 340904), (7928, 254990), (9488, 213065), (9910, 203992), (11860, 170452), (15856, 127495), (19820, 101996), (23720, 85226), (25499, 79280), (39640, 50998), (42613, 47440)]