20385005

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2411}}^1$

素因数の和:2524

約数の個数: 16

約数和(自身を含む): 26049600

約数和(自身を除く): 5664595

約数列:

[1, 5, 19, 89, 95, 445, 1691, 2411, 8455, 12055, 45809, 214579, 229045, 1072895, 4077001, 20385005]

約数ペア:

[(1, 20385005), (5, 4077001), (19, 1072895), (89, 229045), (95, 214579), (445, 45809), (1691, 12055), (2411, 8455)]