21120693

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{27827}}^1$

素因数の和:27864

約数の個数: 16

約数和(自身を含む): 32057856

約数和(自身を除く): 10937163

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 27827, 83481, 306097, 640021, 918291, 1920063, 7040231, 21120693]

約数ペア:

[(1, 21120693), (3, 7040231), (11, 1920063), (23, 918291), (33, 640021), (69, 306097), (253, 83481), (759, 27827)]