18986120

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10099}}^1$

素因数の和:10157

約数の個数: 32

約数和(自身を含む): 43632000

約数和(自身を除く): 24645880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 10099, 20198, 40396, 50495, 80792, 100990, 201980, 403960, 474653, 949306, 1898612, 2373265, 3797224, 4746530, 9493060, 18986120]

約数ペア:

[(1, 18986120), (2, 9493060), (4, 4746530), (5, 3797224), (8, 2373265), (10, 1898612), (20, 949306), (40, 474653), (47, 403960), (94, 201980), (188, 100990), (235, 80792), (376, 50495), (470, 40396), (940, 20198), (1880, 10099)]