18877906

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{6997}}^1$

素因数の和:7089

約数の個数: 16

約数和(自身を含む): 30231360

約数和(自身を除く): 11353454

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 6997, 13994, 132943, 265886, 496787, 993574, 9438953, 18877906]

約数ペア:

[(1, 18877906), (2, 9438953), (19, 993574), (38, 496787), (71, 265886), (142, 132943), (1349, 13994), (2698, 6997)]