20667955

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7669}}^1$

素因数の和:7699

約数の個数: 24

約数和(自身を含む): 31477680

約数和(自身を除く): 10809725

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 7669, 38345, 53683, 84359, 268415, 375781, 421795, 590513, 1878905, 2952565, 4133591, 20667955]

約数ペア:

[(1, 20667955), (5, 4133591), (7, 2952565), (11, 1878905), (35, 590513), (49, 421795), (55, 375781), (77, 268415), (245, 84359), (385, 53683), (539, 38345), (2695, 7669)]