681006680

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{89137}}^1$

素因数の和:89339

約数の個数: 32

約数和(自身を含む): 1540304640

約数和(自身を除く): 859297960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 89137, 178274, 356548, 445685, 713096, 891370, 1782740, 3565480, 17025167, 34050334, 68100668, 85125835, 136201336, 170251670, 340503340, 681006680]

約数ペア:

[(1, 681006680), (2, 340503340), (4, 170251670), (5, 136201336), (8, 85125835), (10, 68100668), (20, 34050334), (40, 17025167), (191, 3565480), (382, 1782740), (764, 891370), (955, 713096), (1528, 445685), (1910, 356548), (3820, 178274), (7640, 89137)]