21788030

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198073}}^1$

素因数の和:198091

約数の個数: 16

約数和(自身を含む): 42783984

約数和(自身を除く): 20995954

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198073, 396146, 990365, 1980730, 2178803, 4357606, 10894015, 21788030]

約数ペア:

[(1, 21788030), (2, 10894015), (5, 4357606), (10, 2178803), (11, 1980730), (22, 990365), (55, 396146), (110, 198073)]