21283760

素因数分解:

$2^4\times 5^1\times {\mathrm{266047}}^1$

素因数の和:266060

約数の個数: 20

約数和(自身を含む): 49484928

約数和(自身を除く): 28201168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 266047, 532094, 1064188, 1330235, 2128376, 2660470, 4256752, 5320940, 10641880, 21283760]

約数ペア:

[(1, 21283760), (2, 10641880), (4, 5320940), (5, 4256752), (8, 2660470), (10, 2128376), (16, 1330235), (20, 1064188), (40, 532094), (80, 266047)]