21184225

素因数分解:

$5^2\times {\mathrm{89}}^1\times {\mathrm{9521}}^1$

素因数の和:9620

約数の個数: 12

約数和(自身を含む): 26566380

約数和(自身を除く): 5382155

約数列:

[1, 5, 25, 89, 445, 2225, 9521, 47605, 238025, 847369, 4236845, 21184225]

約数ペア:

[(1, 21184225), (5, 4236845), (25, 847369), (89, 238025), (445, 47605), (2225, 9521)]