21310808

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{24439}}^1$

素因数の和:24554

約数の個数: 16

約数和(自身を含む): 40326000

約数和(自身を除く): 19015192

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 24439, 48878, 97756, 195512, 2663851, 5327702, 10655404, 21310808]

約数ペア:

[(1, 21310808), (2, 10655404), (4, 5327702), (8, 2663851), (109, 195512), (218, 97756), (436, 48878), (872, 24439)]