7890940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5557}}^1$

素因数の和:5637

約数の個数: 24

約数和(自身を含む): 16807392

約数和(自身を除く): 8916452

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 5557, 11114, 22228, 27785, 55570, 111140, 394547, 789094, 1578188, 1972735, 3945470, 7890940]

約数ペア:

[(1, 7890940), (2, 3945470), (4, 1972735), (5, 1578188), (10, 789094), (20, 394547), (71, 111140), (142, 55570), (284, 27785), (355, 22228), (710, 11114), (1420, 5557)]