51065840

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{1861}}^1$

素因数の和:1895

約数の個数: 80

約数和(自身を含む): 138532800

約数和(自身を除く): 87466960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1861, 1960, 2744, 3430, 3722, 3920, 5488, 6860, 7444, 9305, 13027, 13720, 14888, 18610, 26054, 27440, 29776, 37220, 52108, 65135, 74440, 91189, 104216, 130270, 148880, 182378, 208432, 260540, 364756, 455945, 521080, 638323, 729512, 911890, 1042160, 1276646, 1459024, 1823780, 2553292, 3191615, 3647560, 5106584, 6383230, 7295120, 10213168, 12766460, 25532920, 51065840]

約数ペア:

[(1, 51065840), (2, 25532920), (4, 12766460), (5, 10213168), (7, 7295120), (8, 6383230), (10, 5106584), (14, 3647560), (16, 3191615), (20, 2553292), (28, 1823780), (35, 1459024), (40, 1276646), (49, 1042160), (56, 911890), (70, 729512), (80, 638323), (98, 521080), (112, 455945), (140, 364756), (196, 260540), (245, 208432), (280, 182378), (343, 148880), (392, 130270), (490, 104216), (560, 91189), (686, 74440), (784, 65135), (980, 52108), (1372, 37220), (1715, 29776), (1861, 27440), (1960, 26054), (2744, 18610), (3430, 14888), (3722, 13720), (3920, 13027), (5488, 9305), (6860, 7444)]