19085980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22193}}^1$

素因数の和:22245

約数の個数: 24

約数和(自身を含む): 41014512

約数和(自身を除く): 21928532

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 22193, 44386, 88772, 110965, 221930, 443860, 954299, 1908598, 3817196, 4771495, 9542990, 19085980]

約数ペア:

[(1, 19085980), (2, 9542990), (4, 4771495), (5, 3817196), (10, 1908598), (20, 954299), (43, 443860), (86, 221930), (172, 110965), (215, 88772), (430, 44386), (860, 22193)]