20019855

素因数分解:

$3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{8501}}^1$

素因数の和:8666

約数の個数: 16

約数和(自身を含む): 32239584

約数和(自身を除く): 12219729

約数列:

[1, 3, 5, 15, 157, 471, 785, 2355, 8501, 25503, 42505, 127515, 1334657, 4003971, 6673285, 20019855]

約数ペア:

[(1, 20019855), (3, 6673285), (5, 4003971), (15, 1334657), (157, 127515), (471, 42505), (785, 25503), (2355, 8501)]