21571403

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{2749}}^1$

素因数の和:2834

約数の個数: 16

約数和(自身を含む): 26400000

約数和(自身を除く): 4828597

約数列:

[1, 7, 19, 59, 133, 413, 1121, 2749, 7847, 19243, 52231, 162191, 365617, 1135337, 3081629, 21571403]

約数ペア:

[(1, 21571403), (7, 3081629), (19, 1135337), (59, 365617), (133, 162191), (413, 52231), (1121, 19243), (2749, 7847)]