21058639

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{941}}^1$

素因数の和:1110

約数の個数: 16

約数和(自身を含む): 25320960

約数和(自身を除く): 4262321

約数列:

[1, 7, 23, 139, 161, 941, 973, 3197, 6587, 21643, 22379, 130799, 151501, 915593, 3008377, 21058639]

約数ペア:

[(1, 21058639), (7, 3008377), (23, 915593), (139, 151501), (161, 130799), (941, 22379), (973, 21643), (3197, 6587)]