21906335

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20963}}^1$

素因数の和:20998

約数の個数: 16

約数和(自身を含む): 30188160

約数和(自身を除く): 8281825

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20963, 104815, 230593, 398297, 1152965, 1991485, 4381267, 21906335]

約数ペア:

[(1, 21906335), (5, 4381267), (11, 1991485), (19, 1152965), (55, 398297), (95, 230593), (209, 104815), (1045, 20963)]