20904321

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1\times {\mathrm{467}}^1$

素因数の和:860

約数の個数: 16

約数和(自身を含む): 28664064

約数和(自身を除く): 7759743

約数列:

[1, 3, 43, 129, 347, 467, 1041, 1401, 14921, 20081, 44763, 60243, 162049, 486147, 6968107, 20904321]

約数ペア:

[(1, 20904321), (3, 6968107), (43, 486147), (129, 162049), (347, 60243), (467, 44763), (1041, 20081), (1401, 14921)]