28161189

素因数分解:

$3^4\times 7^1\times {\mathrm{49667}}^1$

素因数の和:49686

約数の個数: 20

約数和(自身を含む): 48078624

約数和(自身を除く): 19917435

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 49667, 149001, 347669, 447003, 1043007, 1341009, 3129021, 4023027, 9387063, 28161189]

約数ペア:

[(1, 28161189), (3, 9387063), (7, 4023027), (9, 3129021), (21, 1341009), (27, 1043007), (63, 447003), (81, 347669), (189, 149001), (567, 49667)]