25571721

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{20639}}^1$

素因数の和:20708

約数の個数: 16

約数和(自身を含む): 39628800

約数和(自身を除く): 14057079

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 20639, 61917, 144473, 433419, 1217701, 3653103, 8523907, 25571721]

約数ペア:

[(1, 25571721), (3, 8523907), (7, 3653103), (21, 1217701), (59, 433419), (177, 144473), (413, 61917), (1239, 20639)]