19799855

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{919}}^1$

素因数の和:1094

約数の個数: 16

約数和(自身を含む): 24729600

約数和(自身を除く): 4929745

約数列:

[1, 5, 31, 139, 155, 695, 919, 4309, 4595, 21545, 28489, 127741, 142445, 638705, 3959971, 19799855]

約数ペア:

[(1, 19799855), (5, 3959971), (31, 638705), (139, 142445), (155, 127741), (695, 28489), (919, 21545), (4309, 4595)]