21955171

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{823}}^1$

素因数の和:970

約数の個数: 16

約数和(自身を含む): 26051584

約数和(自身を除く): 4096413

約数列:

[1, 7, 37, 103, 259, 721, 823, 3811, 5761, 26677, 30451, 84769, 213157, 593383, 3136453, 21955171]

約数ペア:

[(1, 21955171), (7, 3136453), (37, 593383), (103, 213157), (259, 84769), (721, 30451), (823, 26677), (3811, 5761)]