21908414

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{23159}}^1$

素因数の和:23215

約数の個数: 16

約数和(自身を含む): 36685440

約数和(自身を除く): 14777026

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 23159, 46318, 254749, 509498, 995837, 1991674, 10954207, 21908414]

約数ペア:

[(1, 21908414), (2, 10954207), (11, 1991674), (22, 995837), (43, 509498), (86, 254749), (473, 46318), (946, 23159)]