28381347

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20611}}^1$

素因数の和:20640

約数の個数: 20

約数和(自身を含む): 44892936

約数和(自身を除く): 16511589

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20611, 61833, 185499, 350387, 556497, 1051161, 1669491, 3153483, 9460449, 28381347]

約数ペア:

[(1, 28381347), (3, 9460449), (9, 3153483), (17, 1669491), (27, 1051161), (51, 556497), (81, 350387), (153, 185499), (459, 61833), (1377, 20611)]