19399885

素因数分解:

$5^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:492

約数の個数: 16

約数和(自身を含む): 23740416

約数和(自身を除く): 4340531

約数列:

[1, 5, 127, 137, 223, 635, 685, 1115, 17399, 28321, 30551, 86995, 141605, 152755, 3879977, 19399885]

約数ペア:

[(1, 19399885), (5, 3879977), (127, 152755), (137, 141605), (223, 86995), (635, 30551), (685, 28321), (1115, 17399)]