21788523

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{1109}}^1$

素因数の和:1211

約数の個数: 24

約数和(自身を含む): 32900400

約数和(自身を除く): 11111877

約数列:

[1, 3, 9, 37, 59, 111, 177, 333, 531, 1109, 2183, 3327, 6549, 9981, 19647, 41033, 65431, 123099, 196293, 369297, 588879, 2420947, 7262841, 21788523]

約数ペア:

[(1, 21788523), (3, 7262841), (9, 2420947), (37, 588879), (59, 369297), (111, 196293), (177, 123099), (333, 65431), (531, 41033), (1109, 19647), (2183, 9981), (3327, 6549)]