20723906

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20849}}^1$

素因数の和:20929

約数の個数: 16

約数和(自身を含む): 36028800

約数和(自身を除く): 15304894

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 20849, 41698, 145943, 291886, 1480279, 2960558, 10361953, 20723906]

約数ペア:

[(1, 20723906), (2, 10361953), (7, 2960558), (14, 1480279), (71, 291886), (142, 145943), (497, 41698), (994, 20849)]