21019040

素因数分解:

$2^5\times 5^1\times 7^3\times {\mathrm{383}}^1$

素因数の和:419

約数の個数: 96

約数和(自身を含む): 58060800

約数和(自身を除く): 37041760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 343, 383, 392, 490, 560, 686, 766, 784, 980, 1120, 1372, 1532, 1568, 1715, 1915, 1960, 2681, 2744, 3064, 3430, 3830, 3920, 5362, 5488, 6128, 6860, 7660, 7840, 10724, 10976, 12256, 13405, 13720, 15320, 18767, 21448, 26810, 27440, 30640, 37534, 42896, 53620, 54880, 61280, 75068, 85792, 93835, 107240, 131369, 150136, 187670, 214480, 262738, 300272, 375340, 428960, 525476, 600544, 656845, 750680, 1050952, 1313690, 1501360, 2101904, 2627380, 3002720, 4203808, 5254760, 10509520, 21019040]

約数ペア:

[(1, 21019040), (2, 10509520), (4, 5254760), (5, 4203808), (7, 3002720), (8, 2627380), (10, 2101904), (14, 1501360), (16, 1313690), (20, 1050952), (28, 750680), (32, 656845), (35, 600544), (40, 525476), (49, 428960), (56, 375340), (70, 300272), (80, 262738), (98, 214480), (112, 187670), (140, 150136), (160, 131369), (196, 107240), (224, 93835), (245, 85792), (280, 75068), (343, 61280), (383, 54880), (392, 53620), (490, 42896), (560, 37534), (686, 30640), (766, 27440), (784, 26810), (980, 21448), (1120, 18767), (1372, 15320), (1532, 13720), (1568, 13405), (1715, 12256), (1915, 10976), (1960, 10724), (2681, 7840), (2744, 7660), (3064, 6860), (3430, 6128), (3830, 5488), (3920, 5362)]