80552080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20549}}^1$

素因数の和:20576

約数の個数: 60

約数和(自身を含む): 217871100

約数和(自身を除く): 137319020

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, 392, 490, 560, 784, 980, 1960, 3920, 20549, 41098, 82196, 102745, 143843, 164392, 205490, 287686, 328784, 410980, 575372, 719215, 821960, 1006901, 1150744, 1438430, 1643920, 2013802, 2301488, 2876860, 4027604, 5034505, 5753720, 8055208, 10069010, 11507440, 16110416, 20138020, 40276040, 80552080]

約数ペア:

[(1, 80552080), (2, 40276040), (4, 20138020), (5, 16110416), (7, 11507440), (8, 10069010), (10, 8055208), (14, 5753720), (16, 5034505), (20, 4027604), (28, 2876860), (35, 2301488), (40, 2013802), (49, 1643920), (56, 1438430), (70, 1150744), (80, 1006901), (98, 821960), (112, 719215), (140, 575372), (196, 410980), (245, 328784), (280, 287686), (392, 205490), (490, 164392), (560, 143843), (784, 102745), (980, 82196), (1960, 41098), (3920, 20549)]