20168155

素因数分解:

$5^1\times 7^2\times {\mathrm{263}}^1\times {\mathrm{313}}^1$

素因数の和:595

約数の個数: 24

約数和(自身を含む): 28350432

約数和(自身を除く): 8182277

約数列:

[1, 5, 7, 35, 49, 245, 263, 313, 1315, 1565, 1841, 2191, 9205, 10955, 12887, 15337, 64435, 76685, 82319, 411595, 576233, 2881165, 4033631, 20168155]

約数ペア:

[(1, 20168155), (5, 4033631), (7, 2881165), (35, 576233), (49, 411595), (245, 82319), (263, 76685), (313, 64435), (1315, 15337), (1565, 12887), (1841, 10955), (2191, 9205)]