20988386

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{2239}}^1$

素因数の和:2393

約数の個数: 16

約数和(自身を含む): 32524800

約数和(自身を除く): 11536414

約数列:

[1, 2, 43, 86, 109, 218, 2239, 4478, 4687, 9374, 96277, 192554, 244051, 488102, 10494193, 20988386]

約数ペア:

[(1, 20988386), (2, 10494193), (43, 488102), (86, 244051), (109, 192554), (218, 96277), (2239, 9374), (4478, 4687)]