81601995

素因数分解:

$3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{39709}}^1$

素因数の和:39854

約数の個数: 16

約数和(自身を含む): 131519520

約数和(自身を除く): 49917525

約数列:

[1, 3, 5, 15, 137, 411, 685, 2055, 39709, 119127, 198545, 595635, 5440133, 16320399, 27200665, 81601995]

約数ペア:

[(1, 81601995), (3, 27200665), (5, 16320399), (15, 5440133), (137, 595635), (411, 198545), (685, 119127), (2055, 39709)]