19428741

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{1831}}^1$

素因数の和:1974

約数の個数: 20

約数和(自身を含む): 29260704

約数和(自身を除く): 9831963

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 1831, 3537, 5493, 10611, 16479, 49437, 148311, 239861, 719583, 2158749, 6476247, 19428741]

約数ペア:

[(1, 19428741), (3, 6476247), (9, 2158749), (27, 719583), (81, 239861), (131, 148311), (393, 49437), (1179, 16479), (1831, 10611), (3537, 5493)]