27978363

素因数分解:

$3^2\times 7^2\times {\mathrm{63443}}^1$

素因数の和:63463

約数の個数: 18

約数和(自身を含む): 47012004

約数和(自身を除く): 19033641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 63443, 190329, 444101, 570987, 1332303, 3108707, 3996909, 9326121, 27978363]

約数ペア:

[(1, 27978363), (3, 9326121), (7, 3996909), (9, 3108707), (21, 1332303), (49, 570987), (63, 444101), (147, 190329), (441, 63443)]