78889734160

素因数分解:

$2^4\times 5^1\times {\mathrm{986121677}}^1$

素因数の和:986121690

約数の個数: 20

約数和(自身を含む): 183418632108

約数和(自身を除く): 104528897948

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986121677, 1972243354, 3944486708, 4930608385, 7888973416, 9861216770, 15777946832, 19722433540, 39444867080, 78889734160]

約数ペア:

[(1, 78889734160), (2, 39444867080), (4, 19722433540), (5, 15777946832), (8, 9861216770), (10, 7888973416), (16, 4930608385), (20, 3944486708), (40, 1972243354), (80, 986121677)]