19897724

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{839}}^1$

素因数の和:879

約数の個数: 54

約数和(自身を含む): 44576280

約数和(自身を除く): 24678556

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 121, 154, 196, 242, 308, 484, 539, 839, 847, 1078, 1678, 1694, 2156, 3356, 3388, 5873, 5929, 9229, 11746, 11858, 18458, 23492, 23716, 36916, 41111, 64603, 82222, 101519, 129206, 164444, 203038, 258412, 406076, 452221, 710633, 904442, 1421266, 1808884, 2842532, 4974431, 9948862, 19897724]

約数ペア:

[(1, 19897724), (2, 9948862), (4, 4974431), (7, 2842532), (11, 1808884), (14, 1421266), (22, 904442), (28, 710633), (44, 452221), (49, 406076), (77, 258412), (98, 203038), (121, 164444), (154, 129206), (196, 101519), (242, 82222), (308, 64603), (484, 41111), (539, 36916), (839, 23716), (847, 23492), (1078, 18458), (1678, 11858), (1694, 11746), (2156, 9229), (3356, 5929), (3388, 5873)]