28147257

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20441}}^1$

素因数の和:20470

約数の個数: 20

約数和(自身を含む): 44522676

約数和(自身を除く): 16375419

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20441, 61323, 183969, 347497, 551907, 1042491, 1655721, 3127473, 9382419, 28147257]

約数ペア:

[(1, 28147257), (3, 9382419), (9, 3127473), (17, 1655721), (27, 1042491), (51, 551907), (81, 347497), (153, 183969), (459, 61323), (1377, 20441)]