21087561

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{7699}}^1$

素因数の和:7796

約数の個数: 16

約数和(自身を含む): 31046400

約数和(自身を除く): 9958839

約数列:

[1, 3, 11, 33, 83, 249, 913, 2739, 7699, 23097, 84689, 254067, 639017, 1917051, 7029187, 21087561]

約数ペア:

[(1, 21087561), (3, 7029187), (11, 1917051), (33, 639017), (83, 254067), (249, 84689), (913, 23097), (2739, 7699)]