21711710

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19919}}^1$

素因数の和:20035

約数の個数: 16

約数和(自身を含む): 39441600

約数和(自身を除く): 17729890

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19919, 39838, 99595, 199190, 2171171, 4342342, 10855855, 21711710]

約数ペア:

[(1, 21711710), (2, 10855855), (5, 4342342), (10, 2171171), (109, 199190), (218, 99595), (545, 39838), (1090, 19919)]