78924400

素因数分解:

$2^4\times 5^2\times {\mathrm{197311}}^1$

素因数の和:197329

約数の個数: 30

約数和(自身を含む): 189616832

約数和(自身を除く): 110692432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 197311, 394622, 789244, 986555, 1578488, 1973110, 3156976, 3946220, 4932775, 7892440, 9865550, 15784880, 19731100, 39462200, 78924400]

約数ペア:

[(1, 78924400), (2, 39462200), (4, 19731100), (5, 15784880), (8, 9865550), (10, 7892440), (16, 4932775), (20, 3946220), (25, 3156976), (40, 1973110), (50, 1578488), (80, 986555), (100, 789244), (200, 394622), (400, 197311)]