209917960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{107101}}^1$

素因数の和:107126

約数の個数: 48

約数和(自身を含む): 549433260

約数和(自身を除く): 339515300

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 107101, 214202, 428404, 535505, 749707, 856808, 1071010, 1499414, 2142020, 2998828, 3748535, 4284040, 5247949, 5997656, 7497070, 10495898, 14994140, 20991796, 26239745, 29988280, 41983592, 52479490, 104958980, 209917960]

約数ペア:

[(1, 209917960), (2, 104958980), (4, 52479490), (5, 41983592), (7, 29988280), (8, 26239745), (10, 20991796), (14, 14994140), (20, 10495898), (28, 7497070), (35, 5997656), (40, 5247949), (49, 4284040), (56, 3748535), (70, 2998828), (98, 2142020), (140, 1499414), (196, 1071010), (245, 856808), (280, 749707), (392, 535505), (490, 428404), (980, 214202), (1960, 107101)]