209912080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{53549}}^1$

素因数の和:53576

約数の個数: 60

約数和(自身を含む): 567737100

約数和(自身を除く): 357825020

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, 53549, 107098, 214196, 267745, 374843, 428392, 535490, 749686, 856784, 1070980, 1499372, 1874215, 2141960, 2623901, 2998744, 3748430, 4283920, 5247802, 5997488, 7496860, 10495604, 13119505, 14993720, 20991208, 26239010, 29987440, 41982416, 52478020, 104956040, 209912080]

約数ペア:

[(1, 209912080), (2, 104956040), (4, 52478020), (5, 41982416), (7, 29987440), (8, 26239010), (10, 20991208), (14, 14993720), (16, 13119505), (20, 10495604), (28, 7496860), (35, 5997488), (40, 5247802), (49, 4283920), (56, 3748430), (70, 2998744), (80, 2623901), (98, 2141960), (112, 1874215), (140, 1499372), (196, 1070980), (245, 856784), (280, 749686), (392, 535490), (490, 428392), (560, 374843), (784, 267745), (980, 214196), (1960, 107098), (3920, 53549)]