19961325

素因数分解:

$3^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1123}}^1$

素因数の和:1218

約数の個数: 36

約数和(自身を含む): 36237760

約数和(自身を除く): 16276435

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 79, 225, 237, 395, 711, 1123, 1185, 1975, 3369, 3555, 5615, 5925, 10107, 16845, 17775, 28075, 50535, 84225, 88717, 252675, 266151, 443585, 798453, 1330755, 2217925, 3992265, 6653775, 19961325]

約数ペア:

[(1, 19961325), (3, 6653775), (5, 3992265), (9, 2217925), (15, 1330755), (25, 798453), (45, 443585), (75, 266151), (79, 252675), (225, 88717), (237, 84225), (395, 50535), (711, 28075), (1123, 17775), (1185, 16845), (1975, 10107), (3369, 5925), (3555, 5615)]