21087334

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{1361}}^1$

素因数の和:1551

約数の個数: 16

約数和(自身を含む): 32426496

約数和(自身を除く): 11339162

約数列:

[1, 2, 61, 122, 127, 254, 1361, 2722, 7747, 15494, 83021, 166042, 172847, 345694, 10543667, 21087334]

約数ペア:

[(1, 21087334), (2, 10543667), (61, 345694), (122, 172847), (127, 166042), (254, 83021), (1361, 15494), (2722, 7747)]