21355293

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{1789}}^1$

素因数の和:1988

約数の個数: 16

約数和(自身を含む): 29900160

約数和(自身を除く): 8544867

約数列:

[1, 3, 23, 69, 173, 519, 1789, 3979, 5367, 11937, 41147, 123441, 309497, 928491, 7118431, 21355293]

約数ペア:

[(1, 21355293), (3, 7118431), (23, 928491), (69, 309497), (173, 123441), (519, 41147), (1789, 11937), (3979, 5367)]