25397631

素因数分解:

$3^8\times 7^2\times {\mathrm{79}}^1$

素因数の和:117

約数の個数: 54

約数和(自身を含む): 44874960

約数和(自身を除く): 19477329

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 79, 81, 147, 189, 237, 243, 441, 553, 567, 711, 729, 1323, 1659, 1701, 2133, 2187, 3871, 3969, 4977, 5103, 6399, 6561, 11613, 11907, 14931, 15309, 19197, 34839, 35721, 44793, 45927, 57591, 104517, 107163, 134379, 172773, 313551, 321489, 403137, 518319, 940653, 1209411, 2821959, 3628233, 8465877, 25397631]

約数ペア:

[(1, 25397631), (3, 8465877), (7, 3628233), (9, 2821959), (21, 1209411), (27, 940653), (49, 518319), (63, 403137), (79, 321489), (81, 313551), (147, 172773), (189, 134379), (237, 107163), (243, 104517), (441, 57591), (553, 45927), (567, 44793), (711, 35721), (729, 34839), (1323, 19197), (1659, 15309), (1701, 14931), (2133, 11907), (2187, 11613), (3871, 6561), (3969, 6399), (4977, 5103)]