19997361

素因数分解:

$3^4\times {\mathrm{271}}^1\times {\mathrm{911}}^1$

素因数の和:1194

約数の個数: 20

約数和(自身を含む): 30015744

約数和(自身を除く): 10018383

約数列:

[1, 3, 9, 27, 81, 271, 813, 911, 2439, 2733, 7317, 8199, 21951, 24597, 73791, 246881, 740643, 2221929, 6665787, 19997361]

約数ペア:

[(1, 19997361), (3, 6665787), (9, 2221929), (27, 740643), (81, 246881), (271, 73791), (813, 24597), (911, 21951), (2439, 8199), (2733, 7317)]