209919080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{749711}}^1$

素因数の和:749729

約数の個数: 32

約数和(自身を含む): 539792640

約数和(自身を除く): 329873560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 749711, 1499422, 2998844, 3748555, 5247977, 5997688, 7497110, 10495954, 14994220, 20991908, 26239885, 29988440, 41983816, 52479770, 104959540, 209919080]

約数ペア:

[(1, 209919080), (2, 104959540), (4, 52479770), (5, 41983816), (7, 29988440), (8, 26239885), (10, 20991908), (14, 14994220), (20, 10495954), (28, 7497110), (35, 5997688), (40, 5247977), (56, 3748555), (70, 2998844), (140, 1499422), (280, 749711)]