20218980117

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{8998211}}^1$

素因数の和:8998328

約数の個数: 16

約数和(自身を含む): 31097820672

約数和(自身を除く): 10878840555

約数列:

[1, 3, 7, 21, 107, 321, 749, 2247, 8998211, 26994633, 62987477, 188962431, 962808577, 2888425731, 6739660039, 20218980117]

約数ペア:

[(1, 20218980117), (3, 6739660039), (7, 2888425731), (21, 962808577), (107, 188962431), (321, 62987477), (749, 26994633), (2247, 8998211)]