17839521

素因数分解:

$3^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:523

約数の個数: 40

約数和(自身を含む): 30945024

約数和(自身を除く): 13105503

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 81, 189, 219, 431, 511, 567, 657, 1293, 1533, 1971, 3017, 3879, 4599, 5913, 9051, 11637, 13797, 27153, 31463, 34911, 41391, 81459, 94389, 220241, 244377, 283167, 660723, 849501, 1982169, 2548503, 5946507, 17839521]

約数ペア:

[(1, 17839521), (3, 5946507), (7, 2548503), (9, 1982169), (21, 849501), (27, 660723), (63, 283167), (73, 244377), (81, 220241), (189, 94389), (219, 81459), (431, 41391), (511, 34911), (567, 31463), (657, 27153), (1293, 13797), (1533, 11637), (1971, 9051), (3017, 5913), (3879, 4599)]