21798755

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{263}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 29072736

約数和(自身を除く): 7273981

約数列:

[1, 5, 11, 55, 121, 137, 263, 605, 685, 1315, 1507, 2893, 7535, 14465, 16577, 31823, 36031, 82885, 159115, 180155, 396341, 1981705, 4359751, 21798755]

約数ペア:

[(1, 21798755), (5, 4359751), (11, 1981705), (55, 396341), (121, 180155), (137, 159115), (263, 82885), (605, 36031), (685, 31823), (1315, 16577), (1507, 14465), (2893, 7535)]