85178680

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{4337}}^1$

素因数の和:4839

約数の個数: 32

約数和(自身を含む): 192086640

約数和(自身を除く): 106907960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4337, 4910, 8674, 9820, 17348, 19640, 21685, 34696, 43370, 86740, 173480, 2129467, 4258934, 8517868, 10647335, 17035736, 21294670, 42589340, 85178680]

約数ペア:

[(1, 85178680), (2, 42589340), (4, 21294670), (5, 17035736), (8, 10647335), (10, 8517868), (20, 4258934), (40, 2129467), (491, 173480), (982, 86740), (1964, 43370), (2455, 34696), (3928, 21685), (4337, 19640), (4910, 17348), (8674, 9820)]