1520309720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{6359}}^1$

素因数の和:6552

約数の個数: 64

約数和(自身を含む): 3525984000

約数和(自身を除く): 2005674280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 139, 172, 215, 278, 344, 430, 556, 695, 860, 1112, 1390, 1720, 2780, 5560, 5977, 6359, 11954, 12718, 23908, 25436, 29885, 31795, 47816, 50872, 59770, 63590, 119540, 127180, 239080, 254360, 273437, 546874, 883901, 1093748, 1367185, 1767802, 2187496, 2734370, 3535604, 4419505, 5468740, 7071208, 8839010, 10937480, 17678020, 35356040, 38007743, 76015486, 152030972, 190038715, 304061944, 380077430, 760154860, 1520309720]

約数ペア:

[(1, 1520309720), (2, 760154860), (4, 380077430), (5, 304061944), (8, 190038715), (10, 152030972), (20, 76015486), (40, 38007743), (43, 35356040), (86, 17678020), (139, 10937480), (172, 8839010), (215, 7071208), (278, 5468740), (344, 4419505), (430, 3535604), (556, 2734370), (695, 2187496), (860, 1767802), (1112, 1367185), (1390, 1093748), (1720, 883901), (2780, 546874), (5560, 273437), (5977, 254360), (6359, 239080), (11954, 127180), (12718, 119540), (23908, 63590), (25436, 59770), (29885, 50872), (31795, 47816)]