20972541

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1\times {\mathrm{691}}^1$

素因数の和:912

約数の個数: 16

約数和(自身を含む): 28610048

約数和(自身を除く): 7637507

約数列:

[1, 3, 67, 151, 201, 453, 691, 2073, 10117, 30351, 46297, 104341, 138891, 313023, 6990847, 20972541]

約数ペア:

[(1, 20972541), (3, 6990847), (67, 313023), (151, 138891), (201, 104341), (453, 46297), (691, 30351), (2073, 10117)]