21785577

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{28703}}^1$

素因数の和:28740

約数の個数: 16

約数和(自身を含む): 33067008

約数和(自身を除く): 11281431

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 28703, 86109, 315733, 660169, 947199, 1980507, 7261859, 21785577]

約数ペア:

[(1, 21785577), (3, 7261859), (11, 1980507), (23, 947199), (33, 660169), (69, 315733), (253, 86109), (759, 28703)]