21039242

素因数分解:

$2^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{3347}}^1$

素因数の和:3805

約数の個数: 16

約数和(自身を含む): 36158400

約数和(自身を除く): 15119158

約数列:

[1, 2, 7, 14, 449, 898, 3143, 3347, 6286, 6694, 23429, 46858, 1502803, 3005606, 10519621, 21039242]

約数ペア:

[(1, 21039242), (2, 10519621), (7, 3005606), (14, 1502803), (449, 46858), (898, 23429), (3143, 6694), (3347, 6286)]