25256781

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 43243200

約数和(自身を除く): 17986419

約数列:

[1, 3, 9, 11, 17, 33, 43, 51, 99, 129, 153, 187, 349, 387, 473, 561, 731, 1047, 1419, 1683, 2193, 3141, 3839, 4257, 5933, 6579, 8041, 11517, 15007, 17799, 24123, 34551, 45021, 53397, 65263, 72369, 135063, 165077, 195789, 255119, 495231, 587367, 765357, 1485693, 2296071, 2806309, 8418927, 25256781]

約数ペア:

[(1, 25256781), (3, 8418927), (9, 2806309), (11, 2296071), (17, 1485693), (33, 765357), (43, 587367), (51, 495231), (99, 255119), (129, 195789), (153, 165077), (187, 135063), (349, 72369), (387, 65263), (473, 53397), (561, 45021), (731, 34551), (1047, 24123), (1419, 17799), (1683, 15007), (2193, 11517), (3141, 8041), (3839, 6579), (4257, 5933)]