21992403

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{881}}^1$

素因数の和:1094

約数の個数: 16

約数和(自身を含む): 30100896

約数和(自身を除く): 8108493

約数列:

[1, 3, 53, 157, 159, 471, 881, 2643, 8321, 24963, 46693, 138317, 140079, 414951, 7330801, 21992403]

約数ペア:

[(1, 21992403), (3, 7330801), (53, 414951), (157, 140079), (159, 138317), (471, 46693), (881, 24963), (2643, 8321)]