21858628

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6997}}^1$

素因数の和:7083

約数の個数: 24

約数和(自身を含む): 42323904

約数和(自身を除く): 20465276

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6997, 13994, 27988, 76967, 153934, 307868, 496787, 993574, 1987148, 5464657, 10929314, 21858628]

約数ペア:

[(1, 21858628), (2, 10929314), (4, 5464657), (11, 1987148), (22, 993574), (44, 496787), (71, 307868), (142, 153934), (284, 76967), (781, 27988), (1562, 13994), (3124, 6997)]