21890649

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{9343}}^1$

素因数の和:9428

約数の個数: 16

約数和(自身を含む): 32292864

約数和(自身を除く): 10402215

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 9343, 28029, 102773, 308319, 663353, 1990059, 7296883, 21890649]

約数ペア:

[(1, 21890649), (3, 7296883), (11, 1990059), (33, 663353), (71, 308319), (213, 102773), (781, 28029), (2343, 9343)]