21681110

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197101}}^1$

素因数の和:197119

約数の個数: 16

約数和(自身を含む): 42574032

約数和(自身を除く): 20892922

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197101, 394202, 985505, 1971010, 2168111, 4336222, 10840555, 21681110]

約数ペア:

[(1, 21681110), (2, 10840555), (5, 4336222), (10, 2168111), (11, 1971010), (22, 985505), (55, 394202), (110, 197101)]