19427920

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5167}}^1$

素因数の和:5227

約数の個数: 40

約数和(自身を含む): 46139904

約数和(自身を除く): 26711984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5167, 10334, 20668, 25835, 41336, 51670, 82672, 103340, 206680, 242849, 413360, 485698, 971396, 1214245, 1942792, 2428490, 3885584, 4856980, 9713960, 19427920]

約数ペア:

[(1, 19427920), (2, 9713960), (4, 4856980), (5, 3885584), (8, 2428490), (10, 1942792), (16, 1214245), (20, 971396), (40, 485698), (47, 413360), (80, 242849), (94, 206680), (188, 103340), (235, 82672), (376, 51670), (470, 41336), (752, 25835), (940, 20668), (1880, 10334), (3760, 5167)]