12972717

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{9421}}^1$

素因数の和:9450

約数の個数: 20

約数和(自身を含む): 20521116

約数和(自身を除く): 7548399

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 9421, 28263, 84789, 160157, 254367, 480471, 763101, 1441413, 4324239, 12972717]

約数ペア:

[(1, 12972717), (3, 4324239), (9, 1441413), (17, 763101), (27, 480471), (51, 254367), (81, 160157), (153, 84789), (459, 28263), (1377, 9421)]