18657940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{133271}}^1$

素因数の和:133287

約数の個数: 24

約数和(自身を含む): 44779392

約数和(自身を除く): 26121452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 133271, 266542, 533084, 666355, 932897, 1332710, 1865794, 2665420, 3731588, 4664485, 9328970, 18657940]

約数ペア:

[(1, 18657940), (2, 9328970), (4, 4664485), (5, 3731588), (7, 2665420), (10, 1865794), (14, 1332710), (20, 932897), (28, 666355), (35, 533084), (70, 266542), (140, 133271)]