66740720

素因数分解:

$2^4\times 5^1\times {\mathrm{834259}}^1$

素因数の和:834272

約数の個数: 20

約数和(自身を含む): 155172360

約数和(自身を除く): 88431640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 834259, 1668518, 3337036, 4171295, 6674072, 8342590, 13348144, 16685180, 33370360, 66740720]

約数ペア:

[(1, 66740720), (2, 33370360), (4, 16685180), (5, 13348144), (8, 8342590), (10, 6674072), (16, 4171295), (20, 3337036), (40, 1668518), (80, 834259)]