21215361

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{349}}^1\times {\mathrm{881}}^1$

素因数の和:1256

約数の個数: 16

約数和(自身を含む): 29635200

約数和(自身を除く): 8419839

約数列:

[1, 3, 23, 69, 349, 881, 1047, 2643, 8027, 20263, 24081, 60789, 307469, 922407, 7071787, 21215361]

約数ペア:

[(1, 21215361), (3, 7071787), (23, 922407), (69, 307469), (349, 60789), (881, 24081), (1047, 20263), (2643, 8027)]