28657328

素因数分解:

$2^4\times 7^1\times {\mathrm{255869}}^1$

素因数の和:255884

約数の個数: 20

約数和(自身を含む): 63455760

約数和(自身を除く): 34798432

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 255869, 511738, 1023476, 1791083, 2046952, 3582166, 4093904, 7164332, 14328664, 28657328]

約数ペア:

[(1, 28657328), (2, 14328664), (4, 7164332), (7, 4093904), (8, 3582166), (14, 2046952), (16, 1791083), (28, 1023476), (56, 511738), (112, 255869)]