31381858

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{7129}}^1$

素因数の和:7233

約数の個数: 16

約数和(自身を含む): 49282560

約数和(自身を除く): 17900702

約数列:

[1, 2, 31, 62, 71, 142, 2201, 4402, 7129, 14258, 220999, 441998, 506159, 1012318, 15690929, 31381858]

約数ペア:

[(1, 31381858), (2, 15690929), (31, 1012318), (62, 506159), (71, 441998), (142, 220999), (2201, 14258), (4402, 7129)]