21504409

素因数分解:

${\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{839}}^1$

素因数の和:948

約数の個数: 12

約数和(自身を含む): 23042880

約数和(自身を除く): 1538471

約数列:

[1, 19, 71, 361, 839, 1349, 15941, 25631, 59569, 302879, 1131811, 21504409]

約数ペア:

[(1, 21504409), (19, 1131811), (71, 302879), (361, 59569), (839, 25631), (1349, 15941)]