20399949

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{883}}^1$

素因数の和:1057

約数の個数: 24

約数和(自身を含む): 31442112

約数和(自身を除く): 11042163

約数列:

[1, 3, 9, 17, 51, 151, 153, 453, 883, 1359, 2567, 2649, 7701, 7947, 15011, 23103, 45033, 133333, 135099, 399999, 1199997, 2266661, 6799983, 20399949]

約数ペア:

[(1, 20399949), (3, 6799983), (9, 2266661), (17, 1199997), (51, 399999), (151, 135099), (153, 133333), (453, 45033), (883, 23103), (1359, 15011), (2567, 7947), (2649, 7701)]