20809901241

素因数分解:

$3^4\times {\mathrm{719}}^1\times {\mathrm{357319}}^1$

素因数の和:358050

約数の個数: 20

約数和(自身を含む): 31129718400

約数和(自身を除く): 10319817159

約数列:

[1, 3, 9, 27, 81, 719, 2157, 6471, 19413, 58239, 357319, 1071957, 3215871, 9647613, 28942839, 256912361, 770737083, 2312211249, 6936633747, 20809901241]

約数ペア:

[(1, 20809901241), (3, 6936633747), (9, 2312211249), (27, 770737083), (81, 256912361), (719, 28942839), (2157, 9647613), (6471, 3215871), (19413, 1071957), (58239, 357319)]