208408

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:354

約数の個数: 16

約数和(自身を含む): 396000

約数和(自身を除く): 187592

約数列:

[1, 2, 4, 8, 109, 218, 239, 436, 478, 872, 956, 1912, 26051, 52102, 104204, 208408]

約数ペア:

[(1, 208408), (2, 104204), (4, 52102), (8, 26051), (109, 1912), (218, 956), (239, 872), (436, 478)]