20802971

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{823}}^1$

素因数の和:1010

約数の個数: 16

約数和(自身を含む): 24996864

約数和(自身を除く): 4193893

約数列:

[1, 7, 23, 157, 161, 823, 1099, 3611, 5761, 18929, 25277, 129211, 132503, 904477, 2971853, 20802971]

約数ペア:

[(1, 20802971), (7, 2971853), (23, 904477), (157, 132503), (161, 129211), (823, 25277), (1099, 18929), (3611, 5761)]