20417663

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:351

約数の個数: 24

約数和(自身を含む): 25477632

約数和(自身を除く): 5059969

約数列:

[1, 7, 17, 49, 119, 127, 193, 833, 889, 1351, 2159, 3281, 6223, 9457, 15113, 22967, 24511, 105791, 160769, 171577, 416687, 1201039, 2916809, 20417663]

約数ペア:

[(1, 20417663), (7, 2916809), (17, 1201039), (49, 416687), (119, 171577), (127, 160769), (193, 105791), (833, 24511), (889, 22967), (1351, 15113), (2159, 9457), (3281, 6223)]