28128789

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{26713}}^1$

素因数の和:26738

約数の個数: 20

約数和(自身を含む): 45253516

約数和(自身を除く): 17124727

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 26713, 80139, 240417, 347269, 721251, 1041807, 2163753, 3125421, 9376263, 28128789]

約数ペア:

[(1, 28128789), (3, 9376263), (9, 3125421), (13, 2163753), (27, 1041807), (39, 721251), (81, 347269), (117, 240417), (351, 80139), (1053, 26713)]