21790769

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1979}}^1$

素因数の和:2021

約数の個数: 24

約数和(自身を含む): 29494080

約数和(自身を除く): 7703311

約数列:

[1, 7, 11, 13, 77, 91, 121, 143, 847, 1001, 1573, 1979, 11011, 13853, 21769, 25727, 152383, 180089, 239459, 282997, 1676213, 1980979, 3112967, 21790769]

約数ペア:

[(1, 21790769), (7, 3112967), (11, 1980979), (13, 1676213), (77, 282997), (91, 239459), (121, 180089), (143, 152383), (847, 25727), (1001, 21769), (1573, 13853), (1979, 11011)]