20781603

素因数分解:

$3^6\times {\mathrm{29}}^1\times {\mathrm{983}}^1$

素因数の和:1030

約数の個数: 28

約数和(自身を含む): 32265360

約数和(自身を除く): 11483757

約数列:

[1, 3, 9, 27, 29, 81, 87, 243, 261, 729, 783, 983, 2349, 2949, 7047, 8847, 21141, 26541, 28507, 79623, 85521, 238869, 256563, 716607, 769689, 2309067, 6927201, 20781603]

約数ペア:

[(1, 20781603), (3, 6927201), (9, 2309067), (27, 769689), (29, 716607), (81, 256563), (87, 238869), (243, 85521), (261, 79623), (729, 28507), (783, 26541), (983, 21141), (2349, 8847), (2949, 7047)]