21645656

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 41527200

約数和(自身を除く): 19881544

約数列:

[1, 2, 4, 8, 103, 109, 206, 218, 241, 412, 436, 482, 824, 872, 964, 1928, 11227, 22454, 24823, 26269, 44908, 49646, 52538, 89816, 99292, 105076, 198584, 210152, 2705707, 5411414, 10822828, 21645656]

約数ペア:

[(1, 21645656), (2, 10822828), (4, 5411414), (8, 2705707), (103, 210152), (109, 198584), (206, 105076), (218, 99292), (241, 89816), (412, 52538), (436, 49646), (482, 44908), (824, 26269), (872, 24823), (964, 22454), (1928, 11227)]