20687557221

素因数分解:

$3^4\times {\mathrm{6871}}^1\times {\mathrm{37171}}^1$

素因数の和:44054

約数の個数: 20

約数和(自身を含む): 30908964064

約数和(自身を除く): 10221406843

約数列:

[1, 3, 9, 27, 81, 6871, 20613, 37171, 61839, 111513, 185517, 334539, 556551, 1003617, 3010851, 255401941, 766205823, 2298617469, 6895852407, 20687557221]

約数ペア:

[(1, 20687557221), (3, 6895852407), (9, 2298617469), (27, 766205823), (81, 255401941), (6871, 3010851), (20613, 1003617), (37171, 556551), (61839, 334539), (111513, 185517)]