1988649

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{739}}^1$

素因数の和:781

約数の個数: 24

約数和(自身を含む): 3232320

約数和(自身を除く): 1243671

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 739, 897, 2217, 2691, 6651, 9607, 16997, 28821, 50991, 86463, 152973, 220961, 662883, 1988649]

約数ペア:

[(1, 1988649), (3, 662883), (9, 220961), (13, 152973), (23, 86463), (39, 50991), (69, 28821), (117, 16997), (207, 9607), (299, 6651), (739, 2691), (897, 2217)]