209872078

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{187721}}^1$

素因数の和:187779

約数の個数: 16

約数和(自身を含む): 346910256

約数和(自身を除く): 137038178

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 187721, 375442, 2440373, 4880746, 8072003, 16144006, 104936039, 209872078]

約数ペア:

[(1, 209872078), (2, 104936039), (13, 16144006), (26, 8072003), (43, 4880746), (86, 2440373), (559, 375442), (1118, 187721)]