19407340

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10903}}^1$

素因数の和:11001

約数の個数: 24

約数和(自身を含む): 41217120

約数和(自身を除く): 21809780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10903, 21806, 43612, 54515, 109030, 218060, 970367, 1940734, 3881468, 4851835, 9703670, 19407340]

約数ペア:

[(1, 19407340), (2, 9703670), (4, 4851835), (5, 3881468), (10, 1940734), (20, 970367), (89, 218060), (178, 109030), (356, 54515), (445, 43612), (890, 21806), (1780, 10903)]