21784730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198043}}^1$

素因数の和:198061

約数の個数: 16

約数和(自身を含む): 42777504

約数和(自身を除く): 20992774

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198043, 396086, 990215, 1980430, 2178473, 4356946, 10892365, 21784730]

約数ペア:

[(1, 21784730), (2, 10892365), (5, 4356946), (10, 2178473), (11, 1980430), (22, 990215), (55, 396086), (110, 198043)]