20841471

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{8941}}^1$

素因数の和:8991

約数の個数: 24

約数和(自身を含む): 35338784

約数和(自身を除く): 14497313

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 8941, 26823, 62587, 80469, 187761, 330817, 563283, 992451, 2315719, 2977353, 6947157, 20841471]

約数ペア:

[(1, 20841471), (3, 6947157), (7, 2977353), (9, 2315719), (21, 992451), (37, 563283), (63, 330817), (111, 187761), (259, 80469), (333, 62587), (777, 26823), (2331, 8941)]