20209959

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{9721}}^1$

素因数の和:9748

約数の個数: 32

約数和(自身を含む): 37332480

約数和(自身を除く): 17122521

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 189, 231, 297, 693, 2079, 9721, 29163, 68047, 87489, 106931, 204141, 262467, 320793, 612423, 748517, 962379, 1837269, 2245551, 2887137, 6736653, 20209959]

約数ペア:

[(1, 20209959), (3, 6736653), (7, 2887137), (9, 2245551), (11, 1837269), (21, 962379), (27, 748517), (33, 612423), (63, 320793), (77, 262467), (99, 204141), (189, 106931), (231, 87489), (297, 68047), (693, 29163), (2079, 9721)]