655121660

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{66713}}^1$

素因数の和:67213

約数の個数: 24

約数和(自身を含む): 1378578096

約数和(自身を除く): 723456436

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 9820, 66713, 133426, 266852, 333565, 667130, 1334260, 32756083, 65512166, 131024332, 163780415, 327560830, 655121660]

約数ペア:

[(1, 655121660), (2, 327560830), (4, 163780415), (5, 131024332), (10, 65512166), (20, 32756083), (491, 1334260), (982, 667130), (1964, 333565), (2455, 266852), (4910, 133426), (9820, 66713)]