20478723

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^2$

素因数の和:211

約数の個数: 24

約数和(自身を含む): 29064528

約数和(自身を除く): 8585805

約数列:

[1, 3, 37, 53, 59, 111, 159, 177, 1961, 2183, 3127, 3481, 5883, 6549, 9381, 10443, 115699, 128797, 184493, 347097, 386391, 553479, 6826241, 20478723]

約数ペア:

[(1, 20478723), (3, 6826241), (37, 553479), (53, 386391), (59, 347097), (111, 184493), (159, 128797), (177, 115699), (1961, 10443), (2183, 9381), (3127, 6549), (3481, 5883)]