128840675

素因数分解:

$5^2\times {\mathrm{1609}}^1\times {\mathrm{3203}}^1$

素因数の和:4822

約数の個数: 12

約数和(自身を含む): 159911640

約数和(自身を除く): 31070965

約数列:

[1, 5, 25, 1609, 3203, 8045, 16015, 40225, 80075, 5153627, 25768135, 128840675]

約数ペア:

[(1, 128840675), (5, 25768135), (25, 5153627), (1609, 80075), (3203, 40225), (8045, 16015)]