20455315

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1069}}^1$

素因数の和:1206

約数の個数: 16

約数和(自身を含む): 25423200

約数和(自身を除く): 4967885

約数列:

[1, 5, 43, 89, 215, 445, 1069, 3827, 5345, 19135, 45967, 95141, 229835, 475705, 4091063, 20455315]

約数ペア:

[(1, 20455315), (5, 4091063), (43, 475705), (89, 229835), (215, 95141), (445, 45967), (1069, 19135), (3827, 5345)]