16865840

素因数分解:

$2^4\times 5^1\times {\mathrm{210823}}^1$

素因数の和:210836

約数の個数: 20

約数和(自身を含む): 39213264

約数和(自身を除く): 22347424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 210823, 421646, 843292, 1054115, 1686584, 2108230, 3373168, 4216460, 8432920, 16865840]

約数ペア:

[(1, 16865840), (2, 8432920), (4, 4216460), (5, 3373168), (8, 2108230), (10, 1686584), (16, 1054115), (20, 843292), (40, 421646), (80, 210823)]