20109969

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2861}}^1$

素因数の和:2949

約数の個数: 24

約数和(自身を含む): 32145984

約数和(自身を除く): 12036015

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 2861, 7029, 8583, 25749, 31471, 94413, 203131, 283239, 609393, 1828179, 2234441, 6703323, 20109969]

約数ペア:

[(1, 20109969), (3, 6703323), (9, 2234441), (11, 1828179), (33, 609393), (71, 283239), (99, 203131), (213, 94413), (639, 31471), (781, 25749), (2343, 8583), (2861, 7029)]