20307789

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1153}}^1$

素因数の和:1281

約数の個数: 24

約数和(自身を含む): 31204160

約数和(自身を除く): 10896371

約数列:

[1, 3, 9, 19, 57, 103, 171, 309, 927, 1153, 1957, 3459, 5871, 10377, 17613, 21907, 65721, 118759, 197163, 356277, 1068831, 2256421, 6769263, 20307789]

約数ペア:

[(1, 20307789), (3, 6769263), (9, 2256421), (19, 1068831), (57, 356277), (103, 197163), (171, 118759), (309, 65721), (927, 21907), (1153, 17613), (1957, 10377), (3459, 5871)]