81424287

素因数分解:

$3^2\times 7^1\times {\mathrm{541}}^1\times {\mathrm{2389}}^1$

素因数の和:2943

約数の個数: 24

約数和(自身を含む): 134719520

約数和(自身を除く): 53295233

約数列:

[1, 3, 7, 9, 21, 63, 541, 1623, 2389, 3787, 4869, 7167, 11361, 16723, 21501, 34083, 50169, 150507, 1292449, 3877347, 9047143, 11632041, 27141429, 81424287]

約数ペア:

[(1, 81424287), (3, 27141429), (7, 11632041), (9, 9047143), (21, 3877347), (63, 1292449), (541, 150507), (1623, 50169), (2389, 34083), (3787, 21501), (4869, 16723), (7167, 11361)]