20104720

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5347}}^1$

素因数の和:5407

約数の個数: 40

約数和(自身を含む): 47746944

約数和(自身を除く): 27642224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5347, 10694, 21388, 26735, 42776, 53470, 85552, 106940, 213880, 251309, 427760, 502618, 1005236, 1256545, 2010472, 2513090, 4020944, 5026180, 10052360, 20104720]

約数ペア:

[(1, 20104720), (2, 10052360), (4, 5026180), (5, 4020944), (8, 2513090), (10, 2010472), (16, 1256545), (20, 1005236), (40, 502618), (47, 427760), (80, 251309), (94, 213880), (188, 106940), (235, 85552), (376, 53470), (470, 42776), (752, 26735), (940, 21388), (1880, 10694), (3760, 5347)]