78021400

素因数分解:

$2^3\times 5^2\times {\mathrm{390107}}^1$

素因数の和:390123

約数の個数: 24

約数和(自身を含む): 181400220

約数和(自身を除く): 103378820

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 390107, 780214, 1560428, 1950535, 3120856, 3901070, 7802140, 9752675, 15604280, 19505350, 39010700, 78021400]

約数ペア:

[(1, 78021400), (2, 39010700), (4, 19505350), (5, 15604280), (8, 9752675), (10, 7802140), (20, 3901070), (25, 3120856), (40, 1950535), (50, 1560428), (100, 780214), (200, 390107)]