21043760

素因数分解:

$2^4\times 5^1\times {\mathrm{263047}}^1$

素因数の和:263060

約数の個数: 20

約数和(自身を含む): 48926928

約数和(自身を除く): 27883168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263047, 526094, 1052188, 1315235, 2104376, 2630470, 4208752, 5260940, 10521880, 21043760]

約数ペア:

[(1, 21043760), (2, 10521880), (4, 5260940), (5, 4208752), (8, 2630470), (10, 2104376), (16, 1315235), (20, 1052188), (40, 526094), (80, 263047)]