20391502

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{1051}}^1$

素因数の和:1251

約数の個数: 16

約数和(自身を含む): 31244400

約数和(自身を除く): 10852898

約数列:

[1, 2, 89, 109, 178, 218, 1051, 2102, 9701, 19402, 93539, 114559, 187078, 229118, 10195751, 20391502]

約数ペア:

[(1, 20391502), (2, 10195751), (89, 229118), (109, 187078), (178, 114559), (218, 93539), (1051, 19402), (2102, 9701)]