19859800

素因数分解:

$2^3\times 5^2\times {\mathrm{109}}^1\times {\mathrm{911}}^1$

素因数の和:1036

約数の個数: 48

約数和(自身を含む): 46648800

約数和(自身を除く): 26789000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 109, 200, 218, 436, 545, 872, 911, 1090, 1822, 2180, 2725, 3644, 4360, 4555, 5450, 7288, 9110, 10900, 18220, 21800, 22775, 36440, 45550, 91100, 99299, 182200, 198598, 397196, 496495, 794392, 992990, 1985980, 2482475, 3971960, 4964950, 9929900, 19859800]

約数ペア:

[(1, 19859800), (2, 9929900), (4, 4964950), (5, 3971960), (8, 2482475), (10, 1985980), (20, 992990), (25, 794392), (40, 496495), (50, 397196), (100, 198598), (109, 182200), (200, 99299), (218, 91100), (436, 45550), (545, 36440), (872, 22775), (911, 21800), (1090, 18220), (1822, 10900), (2180, 9110), (2725, 7288), (3644, 5450), (4360, 4555)]