25550721

素因数分解:

$3^7\times 7^1\times {\mathrm{1669}}^1$

素因数の和:1697

約数の個数: 32

約数和(自身を含む): 43820800

約数和(自身を除く): 18270079

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1669, 1701, 2187, 5007, 5103, 11683, 15021, 15309, 35049, 45063, 105147, 135189, 315441, 405567, 946323, 1216701, 2838969, 3650103, 8516907, 25550721]

約数ペア:

[(1, 25550721), (3, 8516907), (7, 3650103), (9, 2838969), (21, 1216701), (27, 946323), (63, 405567), (81, 315441), (189, 135189), (243, 105147), (567, 45063), (729, 35049), (1669, 15309), (1701, 15021), (2187, 11683), (5007, 5103)]