21051411

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{2657}}^1$

素因数の和:2818

約数の個数: 16

約数和(自身を含む): 29769600

約数和(自身を除く): 8718189

約数列:

[1, 3, 19, 57, 139, 417, 2641, 2657, 7923, 7971, 50483, 151449, 369323, 1107969, 7017137, 21051411]

約数ペア:

[(1, 21051411), (3, 7017137), (19, 1107969), (57, 369323), (139, 151449), (417, 50483), (2641, 7971), (2657, 7923)]