28784560

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{1049}}^1$

素因数の和:1083

約数の個数: 80

約数和(自身を含む): 78120000

約数和(自身を除く): 49335440

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, 1049, 1372, 1715, 1960, 2098, 2744, 3430, 3920, 4196, 5245, 5488, 6860, 7343, 8392, 10490, 13720, 14686, 16784, 20980, 27440, 29372, 36715, 41960, 51401, 58744, 73430, 83920, 102802, 117488, 146860, 205604, 257005, 293720, 359807, 411208, 514010, 587440, 719614, 822416, 1028020, 1439228, 1799035, 2056040, 2878456, 3598070, 4112080, 5756912, 7196140, 14392280, 28784560]

約数ペア:

[(1, 28784560), (2, 14392280), (4, 7196140), (5, 5756912), (7, 4112080), (8, 3598070), (10, 2878456), (14, 2056040), (16, 1799035), (20, 1439228), (28, 1028020), (35, 822416), (40, 719614), (49, 587440), (56, 514010), (70, 411208), (80, 359807), (98, 293720), (112, 257005), (140, 205604), (196, 146860), (245, 117488), (280, 102802), (343, 83920), (392, 73430), (490, 58744), (560, 51401), (686, 41960), (784, 36715), (980, 29372), (1049, 27440), (1372, 20980), (1715, 16784), (1960, 14686), (2098, 13720), (2744, 10490), (3430, 8392), (3920, 7343), (4196, 6860), (5245, 5488)]