18916137

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:477

約数の個数: 24

約数和(自身を含む): 28169856

約数和(自身を除く): 9253719

約数列:

[1, 3, 9, 47, 141, 197, 227, 423, 591, 681, 1773, 2043, 9259, 10669, 27777, 32007, 44719, 83331, 96021, 134157, 402471, 2101793, 6305379, 18916137]

約数ペア:

[(1, 18916137), (3, 6305379), (9, 2101793), (47, 402471), (141, 134157), (197, 96021), (227, 83331), (423, 44719), (591, 32007), (681, 27777), (1773, 10669), (2043, 9259)]