21490280476

素因数分解:

$2^2\times 7^1\times {\mathrm{767510017}}^1$

素因数の和:767510028

約数の個数: 12

約数和(自身を含む): 42980561008

約数和(自身を除く): 21490280532

約数列:

[1, 2, 4, 7, 14, 28, 767510017, 1535020034, 3070040068, 5372570119, 10745140238, 21490280476]

約数ペア:

[(1, 21490280476), (2, 10745140238), (4, 5372570119), (7, 3070040068), (14, 1535020034), (28, 767510017)]