21857110

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198701}}^1$

素因数の和:198719

約数の個数: 16

約数和(自身を含む): 42919632

約数和(自身を除く): 21062522

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198701, 397402, 993505, 1987010, 2185711, 4371422, 10928555, 21857110]

約数ペア:

[(1, 21857110), (2, 10928555), (5, 4371422), (10, 2185711), (11, 1987010), (22, 993505), (55, 397402), (110, 198701)]