68281640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{243863}}^1$

素因数の和:243881

約数の個数: 32

約数和(自身を含む): 175582080

約数和(自身を除く): 107300440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 243863, 487726, 975452, 1219315, 1707041, 1950904, 2438630, 3414082, 4877260, 6828164, 8535205, 9754520, 13656328, 17070410, 34140820, 68281640]

約数ペア:

[(1, 68281640), (2, 34140820), (4, 17070410), (5, 13656328), (7, 9754520), (8, 8535205), (10, 6828164), (14, 4877260), (20, 3414082), (28, 2438630), (35, 1950904), (40, 1707041), (56, 1219315), (70, 975452), (140, 487726), (280, 243863)]