18657387

素因数分解:

$3^2\times 7^2\times {\mathrm{42307}}^1$

素因数の和:42327

約数の個数: 18

約数和(自身を含む): 31350228

約数和(自身を除く): 12692841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42307, 126921, 296149, 380763, 888447, 2073043, 2665341, 6219129, 18657387]

約数ペア:

[(1, 18657387), (3, 6219129), (7, 2665341), (9, 2073043), (21, 888447), (49, 380763), (63, 296149), (147, 126921), (441, 42307)]