21168819

素因数分解:

$3^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1741}}^1$

素因数の和:1947

約数の個数: 24

約数和(自身を含む): 35146592

約数和(自身を除く): 13977773

約数列:

[1, 3, 7, 9, 21, 63, 193, 579, 1351, 1737, 1741, 4053, 5223, 12159, 12187, 15669, 36561, 109683, 336013, 1008039, 2352091, 3024117, 7056273, 21168819]

約数ペア:

[(1, 21168819), (3, 7056273), (7, 3024117), (9, 2352091), (21, 1008039), (63, 336013), (193, 109683), (579, 36561), (1351, 15669), (1737, 12187), (1741, 12159), (4053, 5223)]