20990966

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{3643}}^1$

素因数の和:3755

約数の個数: 16

約数和(自身を含む): 32708544

約数和(自身を除く): 11717578

約数列:

[1, 2, 43, 67, 86, 134, 2881, 3643, 5762, 7286, 156649, 244081, 313298, 488162, 10495483, 20990966]

約数ペア:

[(1, 20990966), (2, 10495483), (43, 488162), (67, 313298), (86, 244081), (134, 156649), (2881, 7286), (3643, 5762)]