85206820

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{47869}}^1$

素因数の和:47967

約数の個数: 24

約数和(自身を含む): 180948600

約数和(自身を除く): 95741780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 47869, 95738, 191476, 239345, 478690, 957380, 4260341, 8520682, 17041364, 21301705, 42603410, 85206820]

約数ペア:

[(1, 85206820), (2, 42603410), (4, 21301705), (5, 17041364), (10, 8520682), (20, 4260341), (89, 957380), (178, 478690), (356, 239345), (445, 191476), (890, 95738), (1780, 47869)]