68990660

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{8689}}^1$

素因数の和:9095

約数の個数: 24

約数和(自身を含む): 145262040

約数和(自身を除く): 76271380

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 8689, 17378, 34756, 43445, 86890, 173780, 3449533, 6899066, 13798132, 17247665, 34495330, 68990660]

約数ペア:

[(1, 68990660), (2, 34495330), (4, 17247665), (5, 13798132), (10, 6899066), (20, 3449533), (397, 173780), (794, 86890), (1588, 43445), (1985, 34756), (3970, 17378), (7940, 8689)]