19681521

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1\times {\mathrm{631}}^1$

素因数の和:952

約数の個数: 16

約数和(自身を含む): 27090048

約数和(自身を除く): 7408527

約数列:

[1, 3, 37, 111, 281, 631, 843, 1893, 10397, 23347, 31191, 70041, 177311, 531933, 6560507, 19681521]

約数ペア:

[(1, 19681521), (3, 6560507), (37, 531933), (111, 177311), (281, 70041), (631, 31191), (843, 23347), (1893, 10397)]