20986823

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 26671680

約数和(自身を除く): 5684857

約数列:

[1, 11, 13, 17, 89, 97, 143, 187, 221, 979, 1067, 1157, 1261, 1513, 1649, 2431, 8633, 12727, 13871, 16643, 18139, 19669, 21437, 94963, 112229, 146761, 216359, 235807, 1234519, 1614371, 1907893, 20986823]

約数ペア:

[(1, 20986823), (11, 1907893), (13, 1614371), (17, 1234519), (89, 235807), (97, 216359), (143, 146761), (187, 112229), (221, 94963), (979, 21437), (1067, 19669), (1157, 18139), (1261, 16643), (1513, 13871), (1649, 12727), (2431, 8633)]